Hydrates chemical formula. In this experiment, you will be given a sample of hydrate.

Hydrates chemical formula. 7H 2 O and the molar mass are 120. Hydrates are formed when ionic compounds dissolve in water and the resulting solution allowed to evaporate. Jul 7, 2019 · The formula of a hydrate can be determined by dehydrating a known mass of the hydrate, then comparing the masses of the original hydrate and the resulting anhydrous solid. 00 grams of Alum Aluminum Cup +Alum After 1st Heating Aluminum Cup+ Alum After 2nd Heating Mass of Released H20 Molecular Mass of H2O Moles of Released H2O O Jan 27, 2025 · Copper chloride hydrate, a compound derived from copper (II) chloride and water, possesses a definite chemical formula. " The "· nH2O" notation indicates that "n" (described by a Greek prefix) number of loosely bonded water molecules are associated per formula unit of the salt. The sample problem below demonstrates the procedure. The general formula for the compound is Cu x Cl y •zH 2 O, and its name is copper chloride hydrate. Determine the formula of the hydrate and then write out the name of the hydrate. Gypsum is a hydrate with two water molecules present for every formula unit of CaSO 4. These assessments will allow you to assess you knowledge of hydrates and how to use empirical data to determine their chemical formulas. Through this experiment, students will use tools and equipment, demonstrate safe laboratory practices, and apply their understanding of electrons in atoms, chemical bonding, chemical reactions, Hydrates are ionic compounds which have a specific number of water molecules associated with each formula unit. The hydrate state is typically the state used for solution preparation, especially in medical preparation for example. Hydrates can normally be decomposed into the anhydrous (“without water”) salt and water by gentle heating according to the equation below. Feb 27, 2015 · In summary, when a dot is used to break a formula into subunits, it may signify ignorance of how the subunits are structurally related, as in our inorganic example; or it may correspond to actual significant structural subunits, as in our organic example; or it may represent the combining ratios of the binary starting materials required for the Aug 9, 2023 · To write the chemical formula for each hydrate, we need to know the symbols for each element and understand how to indicate the number of water molecules (hydrates) associated with the compound. Accurate measurements and heating are critical to the process. If you've May 14, 2024 · Hydrates, specifically hydrated ionic compounds, are named by the ionic compound they contain, followed by the word hydrate, which is preceded by a prefix that indicates the number of water molecules the compound contains. H 2 O and MgSO 4. The theoretical (actual) percent hydration (percent water) can be calculated from the formula of the hydrate by dividing the mass of water in one mole of the hydrate by the molar mass of the hydrate and multiplying by 100. Apr 30, 2018 · Salts known as hydrates contain molecules of water incorporated into their crystal structures. Its formula is CuSO4 5H2O. The monoclinic yellowish-brown anhydrous form slowly absorbs moisture to form the orthorhombic blue-green dihydrate CuCl2·2H2O, with two water molecules of hydration. These A hydrate contains a definite number of water molecules bound to each ionic compound (also called the anhydrous salt). 75H 2 O) or (4CH 4 ·23H 2 O), also called methane hydrate, hydromethane, methane ice, fire ice, natural gas hydrate, or gas hydrate, is a solid clathrate compound (more specifically, a clathrate hydrate) in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice Ratios vary in different hydrates but are specific for any given hydrate. Apr 24, 2017 · Physical Properties In its hydrate state, Epsom salt has a monoclinic crystal structure. Determine the number of moles of water, x, per mole of anhydrous salt and write the chemical formula of the hydrate sample. The hydrated form is used medically to treat or prevent iron deficiency, and also for industrial applications. From the data collected the number of molecules of hydrated water will be determined per formula unit of anhydrous salt. The crystals change form, even color sometimes, as the water is driven off. 02 g/mol. Read the entire exercise before you begin. 22 = 1. These This page presents a laboratory experiment aimed at determining the empirical formula of copper chloride hydrate through mass loss measurement during dehydration. [4] The anhydrous form is a blue crystalline solid; the dihydrate is purple and the hexahydrate is pink. Chem Worksheet 11-6 A hydrate is an ionic compound that contains water molecules in its structure. You then figure the formula based on the lowest whole number ratio of cations Determine how many molecules of water of crystallization are present in the sample and thus deduce the chemical formula of hydrated copper (ll) sulfate. How can one tell if a chemical is hydrated? How can the amount of water absorbed be determined? What is the correct formula for the hydrate? Other articles where calcium silicate hydrate is discussed: cement: Hydration: …with water molecules to form calcium silicate hydrate (3CaO · 2SiO2 · 3H2O) and calcium hydroxide (Ca [OH]2). Rule 1. We indicate a hydrate by appending the dot ( · ) symbol followed by the number of water molecules, like AxBy· nH2O, where n is the number of waters. ∙Divide the larger amount of moles (Cl) by the smaller (Cu) to get the ratio between Cl and Cu, and thus the chemical formula of the anhydrous salt. 31 g before heating. The letters x, y, and z represent integers that will establish the proper Formula and structure: Magnesium sulfate has three known form: anhydrous, monohydrated and heptahydrated form and its chemical formula are: MgSO 4, MgSO 4. You will determine the mass of the water driven off by heating, as well as the amount of anhydrous salt that remains behind. Take time to organize the materials you will need and set aside a safe work space in which to complete the exercise. Sep 22, 2021 · Identification of hydrates in a group of compounds Investigation of the properties of hydrates Determination of the number moles of water of hydration in a hydrate Water, the most common chemical on earth, can be found in the atmosphere as water vapor. The hydrate of copper sulfate in this experiment is listed below: In the formula, the unit formula for the salt appears first, and the water formula is last. It is useful to know the percent of water contained within a hydrate. Hydrates have a fascinating role in the […] WORKSHEET #7: NOMENCLATURE OF HYDRATED IONIC COMPOUNDS Use Latin prefixes to indicate # of water molecules present Hydrates are compounds that incorporate water molecules into their fundamental solid structure. The chemical state of the water varies widely between different classes of hydrates, some of which were so labeled before their chemical structure was understood. Solution: Determining the Chemical Formula for a Hydrate A hydrate can often be converted to an anhydrous ionic compound by heating. Version 1. In ∙Convert g Cl → mol Cl. 91 g/mol. The coefficient x stands for the number of water molecules that are loosely bonded to Cobalt (II) chloride is an inorganic compound, a salt of cobalt and chlorine, with the formula CoCl 2. Purity: ≥95%. The molar mass is 151. In the solid, these water molecules (also called "waters of hydration") are part of the structure of the compound. The bound water is called the water of hydration. In this experiment, calculating moles requires Copper (II) sulfate pentahydrate is an example of such a hydrate. Quercetin (hydrate): A flavonoid with diverse biological activities. Hydrated Silica | H2O3Si | CID 190201 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities Oct 21, 2025 · How do you calculate hydrates? Divide the mass of the water lost by the mass of hydrate and multiply by 100. The chemical formula for gypsum is CaSO 4 ·2 H 2 O and the chemical name is calcium sulfate dihydrate. " The "· nH 2 O" notation indicates that "n" (described by a Greek prefix) number of loosely bonded water molecules are associated per formula unit of the salt. The chemical formula for gypsum is CaSO 4 • 2H 2 O Methane clathrate (CH 4 ·5. Ionic Compounds Ionic compounds have a [+] cation and a [-] anion. In the above example, the simpler compounds are FeCl3 and H2O, which combine in a ratio of six Waters to every formula unit of Iron (III) Chloride. After heating a hydrate so that all of the water is released from the solid and evaporated, the compound remaining after evaporating all of the water is called A sample of hydrated magnesium sulfate (MgSO4) has a mass of 12. It is a simple pnictogen hydride, and is a colourless flammable liquid with an ammonia -like odour. What is the number of water molecules bonded to Na 2 CO 3 (value of n)? Jan 29, 2020 · A hydrate is a crystalline ionic compound that contains water in its structure. Solution: 1) Determine mass of water driven off: 4. In this lab, the empirical formula for a copper chloride hydrate (CuxCly · z H2O) was to be found. Copper (II) chloride, also known as cupric chloride, is an inorganic compound with the chemical formula Cu Cl 2. Hydrates’ formulae are represented using the formula of the anhydrous (non-water) component of the complex followed by a dot then the water H2O preceded by a Iron (II) sulfate or ferrous sulfate (British English: sulphate instead of sulfate) denotes a range of salts with the formula Fe SO 4 · x H 2 O. Hydrazine is highly hazardous unless handled in solution as, for example, hydrazine hydrate (N2H4·xH2O). These compounds are given the shorthand notations C–S–H (represented by the average formula C3S2H3) and CH, and the hydration reaction can be crudely represented by the following reactions: 2C3S Aug 30, 2024 · What is the purpose of heating a hydrate? Heating a hydrate “drives off” the water molecules, and the solid that is left behind is called anhydrous (which means “without water”). Dec 6, 2022 · Organic Hydrates: Organic hydrates are formed by hydration, which is the addition of water or its components to an organic compound through a chemical reaction. Commercial samples are usually the The formula for water is set apart at the end of the formula with a dot, followed by a coefficient t hat represent s the number of water molecules per formula unit. These compounds exist most commonly as the heptahydrate (x = 7), but several values for x are known. Alum Data. Sep 25, 2025 · Iron (III) sulfate hydrate (CAS 15244-10-7) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca (OH) 2. [8] Calcium hydroxide has many names including hydrated lime, caustic lime, builders By comparing the mass of the hydrate and the anhydrous form, the number of moles of water combined with one mole of anhydrous magnesium sulfate can be determined and ultimately the formula for the hydrate. This is a weak chemical combination between the Water and the salt. Utilize ∙Convert g Cl → mol Cl. In this investigation, you will determine the chemical formula for the hydrate of copper (II) sulfate, CuSO4 • xH2O (s). , hydrates) have a specfic number of water molecules in their chemical formulas. Note the unusual method for writing the chemical formula of this compound. Hydrates are of significant chemical interest due to their structured water content and the influence it has on their properties and practical applications. Hydrazine is mainly used as a foaming agent in preparing polymer foams, but applications also include its uses as a Labwork chm 151 n8102 the mole concept: chemical formula of hydrate final report student name adayeimi student id 290581 lesson the mole concept: chemical Formula and structure: The iron (II) sulfate chemical formula is FeSO 4. 2. 09 g of water 2) Determine moles of Na 2 CO 3 and water: Rules for Naming Hydrated Ionic Compounds Hydrated ionic compounds (i. Sep 15, 2025 · Hydrate | C10H16O4Zn | CID 25199807 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Hydrates are almost always the (or one of the) cystal form (s) of the substance. 67 g sample of a hydrate of magnesium carbonate was heated, without decomposing the carbonate, to drive off the water. Understand what an anhydrate is, the hydrate formula, and how to find the formula Sep 15, 2025 · Hydrate | C10H16O4Zn | CID 25199807 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Recently, Moshfeghian and Taraf [8-10] proposed a shortcut/graphical method to predict the required MEG or MeOH weight percent and flowrate for a desired depression in hydrate temperature of natural gas mixtures. To determine the formula of a hydrate experimentally, we must calculate the mole: mole ratio of the water portion compared to the anhydrate portion. It’s widely used in the solid surface Nomenclature the chemical formula for hydrate is written with a dot between the ionic compound and the moles of water associated with the compound. As water in the solution evaporates, crystals of the compound form with some water bonded (attached) to the formula units inside the crystal. 9267 grams of Na 2 CO 3· nH 2 O with excess HCl (aq), 0. Sep 25, 2025 · Hydrazine hydrate (CAS 7803-57-8) information, including chemical properties, structure, melting point, boiling point, density, formula, molecular weight, uses Hydrates: Determining the Chemical Formula From Empirical Data Used by over 10 million students worldwide Learn the definition of a hydrate and an anhydrate in this lesson. The pentahydrate (n = 5), a bright blue crystal, is the most commonly encountered hydrate of copper (II) sulfate, [10] while its anhydrous form is white. Sep 8, 2011 · AP Chemistry – Lab 02: Formula of a Hydrate Background Many salts that have been crystallized from a water solution appear to be perfectly dry, yet when heated they yield large quantities of water. What is the formula of the hydrate? Lab introduction, discussion, conclusion, data sheets laboratory report experiment determination of the chemical formula of copper chloride hydrate name: lana The chemical formula of a hydrate is written by stating the formula of the anhydrous compound first, followed by a raised dot (·), and then the number of water molecules associated with each formula unit of the compound. In The formula for water is set apart at the end of the formula with a dot (•), followed by a coefficient that represents the number of water molecules per formula unit. ∙Do the same between Cu and water to get the chemical formula of the hydrate. xH 2 O, while the most widely used is the heptahydrate iron (II) sulfate FeSO 4. Discover the significance of hydrates in health and industry, exploring their roles in hydration, chemical reactions, and everyday applications. Also, to calculate the percentage of water in the hydrate and to calculate the hydrates formula using various formulas in order to determine this information. When it is dehydrated, the anhydrous sample has a mass of 6. Solutions are used in dyeing as a mordant and as a coagulant for industrial wastes. The five in front of the formula for water tells us there are 5 water molecules per formula unit of CuSO4 (or 5 moles of water per mole of CuSO4). 361 g mol -1, respectively. The Mole Concept: Chemical Formula of a Hydrate - Lab Report Exercise 1: Water of Hydration Data Table 1. 12. The raised dot means that the water is loosely bonded to the Ionic compound or salt. 6039 grams of a gas is given off. The best-known hydrates are crystalline solids that lose their fundamental structures upon removal of the bound water. It’s a good flame retardant filler because that no toxic and corrosive gases were generated in thermal decomposition. 58 g. To explore the relationship between mass, moles, and molecules of a compound. Example #3: When you react 3. A) Calculate the moles of anhydrous (dry) KAl(SO4)2 that were present in the sample. Annually, approximately 125 million tons of calcium hydroxide are produced worldwide. They can form through various mechanisms, display characteristic behaviors when heated, and are categorized based on their method of formation and structural characteristics. When heated, these molecules are released as vapor, leaving the anhydrous form. Aluminum Hydrate / Aluminum Hydroxide High whiteness (reputed as Chinese Whiteness), low oil absorption, steady in room temperature and dehydrated to alumina while heating, to make the products have the function of flame retardant. An anhydride is a hydrate that has lost water. e. Example #2: A hydrate of Na 2 CO 3 has a mass of 4. The chemical formula of hydrate specifies the relative number of each kind of atom in a molecule, as well as the number of water molecules bound to each molecule. Key Points Hydrates are named by the ionic compound followed by a numerical prefix and the suffix "-hydrate. The formula of a hydrate is written to show the number of water molecules contained in the crystal for every formula unit of salt. In this experiment, you will be given a sample of hydrate. The formula of the hydrate is represented by the formula of the anhydrous salt followed by a dot and xH2O, where x is the number of moles of water per mole of the anhydrous salt. The mass was reduced to 7. x H2O. If you heat a hydrated salt, you can cause the water it contains to evaporate; the resulting crystal is called anhydrous, meaning without water. 31 − 3. Introduction: In today's experiment, you will be working with a category of ionic The Mole Concept: Chemical Formula of a Hydrate - Lab Report Exercise 1: Water of Hydration Data Table 1. This salt is found in a broad range of hydrated salts with the formula FeSO 4. The objective of this lab is to investigate the properties of hydrates and their behavior upon heating. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed with water. What is a hydrate? Learn the hydrate definition, naming conventions, and common examples of hydrates to understand this tricky chemistry concept. Which is the correct chemical formula for the hydrate? Hydrated Silica | H2O3Si | CID 190201 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities Study with Quizlet and memorize flashcards containing terms like Copper(II) sulfate pentahydrate, Lithium hydroxide monohydrate, Nickel(II) sulfate heptahydrate and more. Discover how, when given experimental data, you can determine the formula of a hydrate by following simple steps that include finding the moles of hydrate and anhydrate and comparing the two to write the formula. The difference in mass between the anhydrous and hydrated salt gives you the information you need to find the percentage of water in the hydrate. The mole ratio of water to anhydrous compound determines the empirical formula of the hydrate. The formula of a hydrate is represented in a special manner. Table of Contents1 What are hydrates?2 The definition of a hydrate3 Naming hydrate compounds4 The general formula of a hydrate5 Different types of hydrates6 Anhydrous compounds7 Decomposition of a hydrate8 Conclusion Are you familiar with the term “hydrate” in chemistry? If not, don’t worry! We’ve got you covered. Introduction: The number of atoms of each element that Gypsum is a hydrate in which two water molecules are present for every formula unit of CaSO 4 in the solid. Unlike simple solutions where water acts merely as a solvent, hydrates exhibit a defined stoichiometric relationship between the anhydrous compound and the number of water molecules incorporated, denoted as H2O. Learn more about hydrates with this article. Its chemical Calcium silicate hydrate | CaH2O4Si | CID 21910000 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. It includes procedures for heating, … Hydrate, any compound containing water in the form of H2O molecules, usually, but not always, with a definite content of water by weight. Hydrates are substances that include water in their formula. 273 g. 361 g mol -1, 138. Overview In this experiment, you will determine the chemical formula for a compound that has water entrained in the crystal structure. The ratio of ChemSpider record containing structure, synonyms, properties, vendors and database links for Hydrazine hydrate, 7803-57-8, Hydrazine, IKDUDTNKRLTJSI-UHFFFAOYSA-N Experiment 605: Hydrates Section 1: Purpose and Summary Determine the percent water of hydration in a hydrate sample. Hydrate, any compound containing water in the form of H2O molecules, usually, but not always, with a definite content of water by weight. May 9, 2025 · In the realm of chemical compounds, hydrates represent a fascinating class of substances characterized by the incorporation of water molecules within their crystalline structure. Sep 15, 2025 · Sodium hydroxide, powder | H2NaO+ | CID 449308 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological Question: The Mole Concept: Chemical Formula of a Hydrate - Lab Report Assistant Exercise 1: Water of Hydration Data Table 1. A hydrate is an addition compound; a compound that contains two or more simpler compounds. introduction: Aug 26, 2024 · Chemistry document from SBTS, 1 page, The Mole Concept: Chemical Formula of a Hydrate - Lab Report Assistant Exercise 1: Water of Hydration Data Table 1. This property makes hydrates useful for determining percentage composition and formulas experimentally. ) B) Calculate the ratio of moles of H2O to moles gf anhydrous KAl(SO4)2. 22 g. 3): Hydrate In chemistry, a hydrate is a substance that contains water or its constituent elements. Hydrates are ionic compounds that contain water molecules as part of their crystal structure. Some chemicals, when exposed to water in the atmosphere, will reversibly either adsorb it onto their surface or include it in their structure Nov 21, 2023 · Learn the anhydrate definition and what a hydrated compound is. A variety of hydrates are known, including the most commonly encountered form of "ferric sulfate". The water is not actually part of the chemical substance and this is reflected in the way the formula is written. Note that the dot in the formula (or multiplication sign) indicates that the waters are there. The formula unit for the salt appears first, followed by the water formula. lab percent water and the chemical formula of hydrate purpose: to determine the percentage of water in hydrate and the correct chemical formula. The formula represents the composition and structure of the hydrate, indicating the ratio of copper, chlorine, and water molecules within its crystalline framework. In a hydrate (which usually has a specific crystalline form), a defined number of water molecules are associated with each formula unit of the primary material. Aug 26, 2024 · The Mole Concept: Chemical Formula of a Hydrate Hands-On Labs, Inc. As such, the How To Find The Empirical Formula of a Hydrated Ionic Compound Avogadro's Number, The Mole, Grams, Atoms, Molar Mass Calculations - Introduction Making liquid nitrogen from scratch (an absurd amount) Jan 22, 2025 · Summary Explanation : Hydrates are compounds with water molecules integrated into their crystal structure. The formula of the hydrate shows the ratio of the moles of anhydrous salt to the moles of water; in the above case, that ratio is 1:5. (Show all calculations including units. A substance that does not contain any water is referred to as anhydrous. When a hydrate is heated the water molecules are driven off as Objectives Introduction to quantitative analysis: determination of proportions of subunits in a chemical sample Laboratory tool: Bunsen burner Introduction to forms of matter with example of ionic hydrates Learn how to determine the chemical formula of a hydrate through lab procedures and calculations. Then, using the difference in mass, and the chemical formula of the anhydrous residue, one can find the chemical formula of the hydrate. . These water molecules are part of the structure and hydrated chemical, therefore cannot be changed when balancing a chemical equation. It is industrially produced for use as a co-catalyst in the Wacker process. The injection rate is a function of feed gas temperature (FGT), pressure (FGP), relative density (SG), hydrate formation temperature depression (HFTD), and lean solution concentration. Known since ancient times as copperas In this experiment, you will use the law of definite proportions to find the chemical formula of a hydrated compound containing copper, chlorine, and water molecules locked in the crystal structure of the solid compound. The chemical formula of a hydrate can be determined by analyzing the percent water in the hydrate, the ratio of the mass of water lost upon heating divided by the mass of the original hydrate. The most common form is the heptahydrated salt which is called Epsom salt which has an orthorhombic structure. May 13, 2009 · The formula of a hydrate is represented in a special manner. CAS Number: 849061-97-8. Background: Hydrates are crystalline substances that contain water chemically bound in a definite ratio. Such compounds are called hydrates. 7H 2 O with the molar mass of 278. [11] Older names for the pentahydrate include blue vitriol, bluestone, [12] vitriol of copper, [13 After heating, the mass of the anhydrous compound is found to be 3. Claims of the formation of tri- and tetrahydrates have not been confirmed. 361 g mol -1 and 246. [8] Calcium hydroxide has many names including hydrated lime, caustic lime, builders Sep 22, 2024 · Chem 1AChemical Formula of a Hydrate Chemical Formula of a Hydrate Objectives: 1. ∙Finally, calculate the molar mass of the hydrate. So you do not need to state the number of cations and anions, you only need to state what they are (and what their charge is). Hands-On Lab: The Mole Concept & Hydrate Chemical Formula Analysis Course: General Chemistry I (CHM-151) 23 documents University: Fayetteville Technical Community College Sep 15, 2025 · Chloride;hydrate | ClH2O- | CID 21584545 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Experiment # Kayla Morren Chemical Formula of a Hydrate Objective: The objective is to complete the dehydration of a hydrate by separating it into an anhydrate and water molecules. The hydrate of copper (II) sulfate in this experiment has the formula Cu(SO4) . It forms hydrates CuSO4·nH2O, where n can range from 1 to 7. 845 g. Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca (OH) 2. This suggests that water was present as part of the crystal structure. Alum Data Mass (8) Object Aluminum Cup (Empty Aluminum Cup +2. Determine the formula of a hydrate Problem #1: A 15. Epsom salt appears similar to standard table salt, though it is typically available in much larger salt crystals than standard culinary salt, especially when intended for use in bathwater Note: Key terms needed: hydrate, anhydrous, chemical reaction, empirical formula. Experiment Summary: You will calculate the number of moles and atoms of a compound Hydrazine is an inorganic compound with the chemical formula N 2 H 4. After heating, the mass of the anhydrous compound is found to be 3. You must write the balanced chemical equation for any chemical reactions involved. To learn proper technique for using the laboratory equipment such as: Bunsen burner safety, strong acid safety, and vacuum filtration processes. Some Copper (II) sulfate is an inorganic compound with the chemical formula Cu SO 4. 0 Review the safety materials and wear goggles when working with chemicals. We use the Principle of Charge Neutrality, that is, for an ionic compound to be stable its chemical formula MUST BE NEUTRAL. Perfect for chemistry students and educators. This water is “driven off” easy by heating a sample of the compound. In the case of titanium (III) oxalate decahydrate May 9, 2025 · In the realm of chemical compounds, hydrates represent a fascinating class of substances characterized by the incorporation of water molecules within their crystalline structure. Both the anhydrous and the dihydrate Hydrates Hydrates are substances that tend to associate with a fixed number of intact water molecules. Iron (III) sulfate or ferric sulfate (British English: sulphate instead of sulfate) is a family of inorganic compounds with the formula Fe 2 (SO 4) 3 (H 2 O) n. An anhydrate is the substance that remains after the water is removed from a hydrate. The mass of water evaporated is obtained by subtracting the mass of the anhydrous solid from the mass of the original hydrate (2. The compound forms several hydrates CoCl 2 · nH 2O, for n = 1, 2, 6, and 9. qmrag 8jet gyff ut8h1oc m4cc deps m2oblpd6 d77i 2o76rv9z lvf6