Freezing point depression lab report conclusion. Materials Butylated hydroxytoluene (BHT .

Freezing point depression lab report conclusion. 1) The document is a laboratory report for an experiment determining freezing point depression and molar mass. In this experiment, we will examine properties like boiling point and freezing point. 1) Δ T f = T f o T f = K f m c K f is known as the freezing point depression constant, and depends on the solvent used. Jul 12, 2020 · CONCLUSION The purpose of this lab was to determine the molecular mass of a compound by measuring the freezing point depression. Includes procedures, calculations, & analysis questions. Calculate the molality of a solution. Preview text Discussion The scientific definition of the freezing point of a solution is when the temperature is equal between the liquid and solid states of the solvent. Jul 24, 2025 · More particles are produced by NaCl's dissociation into two ions than by sucrose or ethylene glycol, which results in a larger freezing point depression. Know the definition of molality (m) and use it to solve for moles of solute, kilograms of solvent and molality. Sucrose is considered a green compound for this lab because it requires no hazardous material disposal and produces no toxic fumes. In this lab you will work your data up in a Google Spreadsheet, the template of which can be downloaded on the report page (3. docx Ashley Reyes CHEM 1121-102 February 4, 2024 Experiment 2: Freezing Point Depression Pre-lab Write-up Purpose: This experiment aims to discover the freezing point depression caused by an unknown solute and subsequently identify its chemical identity. The molar mass of the unknown is calculated based on the freezing point depression of the solution. 0 license and was authored, remixed, and/or curated by Santa Monica College. Feb 27, 2025 · Conclusion The object of this experiment was to determine the effectiveness of MgCl ₂ as a deicer by calculating the change in the freezing point depression of MgCl ₂ and the enthalpy of dissolution of MgCl ₂ . 31, 2023 SECTION: 422 TA: Ronald Mutete A. It also showed that sugar lowers water’s Using Freezing-Point Depression 4 to Find Molecular Weight When a solute is dissolved in a solvent, the freezing temperature is lowered in proportion to the number of moles of solute added. R: Determination of the Molar Mass by Freezing Point Depression (Lab Report) is shared under a CC BY-NC-SA 4. Identify errors and explain their effect on experimental data. 2-3 - Notes/Homework G. While this method has been superseded by modern instrumental methods for molar mass determination, it remains an interesting experiment for understanding the physical basis of the freezing point, and also for its applications to daily life. Introduction There are four main types of colligative properties, which are vapor pressure lowering, freezing point depression, boiling point elevation, and finally, osmotic pressure. This property, known as freezing-point depression, is a colligative property; that is, it depends on the ratio of solute and solvent particles, not on the nature of the substance itself. Phase boundaries (solid lines) on Mar 1, 2023 · CHEM 1002 COLLIGATIVE PROPERTIES Laboratory Report NAME: Noah Sandberg DATE: Jan. Discussion/Conclusion: The purpose of this lab was to determine the molecular mass of a compound by measuring the freezing point depression. Includes procedures, results, discussion, and conclusion. The freezing . These physical properties are collectively called colligative properties. Laboratory Report Guideline - Freezing Point Depression Cover Page - title of the report, name, partner's name Abstract the purpose of the experiment brief summary of the results Theory discuss of colligative properties and freezing point depression define and discuss molality and van't Hoff factor value Procedure Data The freezing point depression increases linearly with the concentration of the solute, supporting the theoretical relationship described by the formula ΔT_f = i × K_f × m. Provide a space for observations of GOAL AND OVERVIEW In the rst part of the lab, a series of solutions will be made in order to determine the freezing point depression constant, Kf, for cyclohexane. Reproduce the data from the Data page and the Data Table, pages 5 and 6, and turn in with your report, along with all three graphs. Introduction Some physical properties of solutions are different from those of the pure solvent. 2-2 - Notes/Homework CHM2046L 2-8 Discussion and Conclusion Freezing Point Do what he says! Depression Lab David Edelman 5° Give this lab report bonus points or the stick figure gets it! Purpose The purpose of this lab was to determine the molecular mass of an unknown substance through calculating the freezing point depression when the unknown substance is added as a solute to a solvent with known properties. 3-3. Know freezing point depression and boiling point elevation are colligative properties. Explore the effects of solute concentration on freezing point depression in this lab report, identifying Octadecanol through experimental analysis. Students also viewed Laboratory Report freezing point D C Lab 5 G. Using the freezing-point depression and the molality of the solution, the molecular weight of the solute Introduction The freezing point depression and other colligative properties of a solution were traditionally used to determine the molar mass of a solute. This was done by reacting lauric acid with an unknown solute. 4. this was done taking biphenyl as the Lab Report experiment determination of freezing point depression constant total points: 51 name: dominic boever lab section: 401 report your report should Determine the molecular mass of an unknown compound using freezing point depression. Then, by using the molal concentration and the depression value of the freezing point obtained, use the formula ? T - Kf x m to determine the constant of freezing point for compound solvent A and B. The freezing point depression ∆T, is the difference between the freezing point of the pure solvent and the freezing point of the solution. Procedure summary ( 5 Points, ~100 words ) : This experiment consisted of two parts. This illustrates how ion dissociation causes electrolytes to have a greater impact on colliding properties than nonelectrolytes. Phase boundaries (solid lines) on The molal concentration of both solutions can be calculated after obtaining the freezing point of depression. Nov 14, 2024 · View lab report 4. Colligative Properties: Freezing Point Depression Jasmine Banks Malia Jones, Kayla Thomas, and Antonia Thomas Alcorn State Question: Laboratory 2. INTRODUCTION In this experiment, the task is to find the relationship between the solute and the freezing point of the solution. The amount by which the freezing point decreases is called the freezing point depression, which is expressed in moles of the dissolved substance per kilogram of liquid. In the second part of the lab, the freezing point of a cyclohexane solution will be prepared Molar Mass by Freezing Point Depression In this experiment, you will determine the freezing point of cyclohexane and the freezing point of a solution containing a weighed amount of unknown solute and cyclohexane. 1: Δ f = f (solvent) – f (solution) (Equation FPD. This laboratory experiment not only reinforces the principles of colligative properties but also enhances our practical skills in laboratory techniques and calculations. 0 Conclusion The purpose of this experiment was to determine whether different chemicals effect water’s freezing point and if different chemicals change it more than others. The Lab Report: Unveiling the Secrets of Freezing Point Depression Now, let’s talk about the lab report – this document is your toolkit for understanding freezing point depression. 3A: Solutions and Freezing Point Depression Report). Measure the freezing point of a liquid and determine the freezing point depression of a solution. Table of contents Freezing Point Depression Lab Report Links Checklist for submitted report (Google Workbook): Note ADAPT This page describes what you need to do to complete and submit the assignment. In this lab we analyzed the differences in the freezing points of distilled water versus distilled water with isopropyl alcohol. As expected, the freezing point of the solution decreased as the solute content increased. The molar mass of the solute was 88 gmol-1. As the concentration of a soluti on rises, the boiling point increases, while freezing point decreases. Apr 28, 2024 · Adriana Blanco CHM1045 RVC 1238 February 25th, 2024 Colligative Properties-Freezing Point Depression Lab Report Purpose : The purpose of a laboratory experiment on colligative properties, specifically freezing-point depression, is to demonstrate and understand the effect of solute concentration on the freezing point of a solvent. We were tasked with finding the molar mass of an unknown compound using the colligative property of Freezing Point Depression. Determination of the Molecular Weight of an Unknown Compound by Freezing Point Depression NAME: DATE INSTRUCTOR: SECTION: In-Lab Guidelines (This is a guide to allow you to prepare your Laboratory Notebook so that you can efficiently collect and record the data needed for each part of this experi- ment. Delve into this expertly written essay to spark your own creative inspiration. Aug 17, 2023 · The conclusion of the " Colligative Properties: Freezing-point Depression and Molar Mass" lab indicates that the freezing-point depression of a solution is directly proportional to the molality of the solute particles, providing a method to determine the molar mass of an unknown solute. The freezing point of the solution should be lower than the freezing point of the pure solvent. Colligative properties are properties of solutions that depend Feb 18, 2025 · General Chemistry Labs II | Department of Chemistry | Tulane University | Spring 2025 Experiment 5 - Freezing Point Depression Experiment 5: Freezing Point Depression Objective: Read this handout below and provide the objective of this experiment 1 What to write in your pre-lab? (1) Read this handout (Background, Procedure, and Lab Report Instruction), then make a flowchart (not an outline) of Lab report on freezing point depression introduction the freezing point depression states that the freezing point of mixture of two components is lower than The objective of this experiment is to determine the molar mass of an unknown solid using the colligative property of freezing point depression. 2-1 Hess law - Lab Cam Scanner 11-08-2023 17 Amber Duff discussion 8 Freezing Point Conclusion Freezing Point Depression The purpose of this experiment is to observe one of the colligative properties of solutions: freezing point depression, the amount by which the freezing point is lowered due to the addition of a known amount of solute to a given amount of a particular solvent. Regardless of the topic, subject or complexity, we can help you write any paper! Lab 5 Report laboratory experiment colligative properties: freezing point depression and molar mass introduction procedure materials: 250ml beaker 50ml conical Then the number of moles in that sample would be determined by measuring the freezing point depression. In this lab we will measure the freezing point of the two solutions created in the first part of the lab and compare them to pure water. This is characterized by a drop in the temperature and the freezing of the solution. A pure solvent of cyclohexane’s freezing point was first determined by melting and freezing it and then the solute was added and the freezing point was observed when the temperature has dropped to 10°C These help us understand the num ber of particles dissolved in a solution. lab report for experiment 12 delaney loy julia riedmiller megan hayden che february 10, 2024 discovering freezing point depression in various concentrations Coursework (7) The Solubility and Thermodynamics of Borax Lab Report Fundamentals Of Chemistry Laboratory Coursework (41) Electron Structure of an Atom Lab Report Fundamentals Of Chemistry Laboratory Coursework (1) Freezing Point Depression Lab Report Fundamentals Of Chemistry Laboratory Coursework None CHEM 221LUniversity of North Dakota Molar Mass Determination by Freezing Point Depression If a nonvolatile solute is added to a liquid, a number of physical properties of the pure substance change, including vapor pressure depression, freezing point depression, and boiling point elevation. The laboratory uses food-grade reagents and is delivered in two units that can be taught in a single 2 hour freezing point of a pure solvent and a solution of an unknown organic substance dissolved in the solvent. Draw conclusions based on experimental data. The result was obtained that the freezing point of the solution decreased with increasing doses of CaCl2. Last semester, when learning it in lecture, I struggled to understand how to find the energy change of reaction and enthalpy change as well. The results confirmed the hypothesis that salt added to water would lower the freezing point and that it would be lower than the freezing point of water with sugar added. The procedure involves measuring the freezing points of pure Ben Quinones AP Chem Mr. Part 2: Freezing Point Depression Colligative properties (sections 3. Annotation Freezing-point depression, a colligative property, is investigated. In this take home lab, you will analyze some temperature versus time freezing point data and create a computer generated graph showing both the pure solvent and the solution using the same axes. The freezing point depression, Δ𝑇f, depends on the molality of the solute, m, the van’t Hoff factor, i, and the freezing point depression constant, 𝐾f, as shown in the equation, Δ𝑇f = −𝑖 ⋅ 𝐾f ⋅ 𝑚. In this experiment the freezing point depression of water due to the presence of a solute will be studied. We would like to show you a description here but the site won’t allow us. 3. This can be determined by the temperature and freezing point dropping. Objective: The objective of this experiment is to determine the molar mass of an unknown solute by measuring the freezing point depression of a solution of this solute in a solvent as compared to the freezing point of the pure solvent. Was energy transformed? did the energy Oct 9, 2019 · 8. Freezing‐point depression Phase diagrams and phase transitions phase diagram such as Figure 5‐1 indicates the most stable state of substance (solid, liquid, or vapor) at any given tem‐perature and pressure. includes intro, calculations, conclusion lab freezing point depression introduction the experiment conducted is meant to observe the colligative properties of We would like to show you a description here but the site won’t allow us. (2. The magnitude of the freezing point lowering ( Tf) depends on the nature of the solvent and the concentration lab 4 lab using depression to find molecular weight introduction the purpose of this experiment is to study the correlation between the freezing point Abstract Colligative properties are properties of a solution dependent on the concentration of solute particles, not on the chemical properties of the solute. 3: Solutions and Freezing Point Depression Report Page ID Table of contents Freezing Point Depression Lab Report Links Checklist for submitted report (Google Workbook): Note ADAPT This page describes what you need to do to complete and submit the assignment. pdf from CH 6 at Alcorn State University. Technology is used to collect, graph and analyze both the cooling of a pure solvent and the cooling of the solvent when a solute is added. The equation that Check out this Freezing Point Depression Lab Report essay sample, characterized by its high quality and in-depth research. Then we will find the freezing prof denis kisuonko lab report molar mass freezing point depression hina huynh 26sept2021 purpose: determine and understand how to obtain the molar mass of an Freezing‐point depression Phase diagrams and phase transitions phase diagram such as Figure 5‐1 indicates the most stable state of substance (solid, liquid, or vapor) at any given tem‐perature and pressure. The equation that shows freezing point rel ationship is shown below: Experiment 1: Colligate Properties; Freezing Point Depression Jayden Moore Lab partners: Stephen Dominguez, Santino Cardoza, Norelia Solis, Marisol Flores TA: Tajandravarma Japana September 17, 2024 Pre-Lab questions Find the literature value for the freezing point and the freezing point depression constant for naphthalene. We ar Sep 7, 2024 · The freezing point depression method is a practical and insightful technique to determine the molecular weight of unknown substances. Perry 25 January 2013 Molar Mass by Freezing Point Depression Conclusion: My Lab unsuccessfully found the molar mass of the unknown given to us in the lab. K f is known as the freezing point depression constant and depends on the solvent used. To address those concerns, this lab uses an aqueous solution of a green compound (sucrose, C 12 H 22 O 11, 342 g/mole) for determining its molar mass by the freezing-point depression of water. You will determine the molar mass of the unknown solute based on the decrease in the freezing point. With that information, you should’ve been able to calculate the van’t Hoff Factor from plotting the data and drawing a trend line to connect the points. CONCLUSION: The objective of this experiment was successfully achieved. These properties can also be measured. C. t concentration afect freezing point depression? (NOTE: If students have not come up with a mathematical solution, ask them to create l of solute afect the freezing point temperature? Depending on students’ chemical knowledge, it may be useful to write chemical fo mu as on the board and com ar e e. This was done by reacting cyclohexane with an unknown solute. Conclusion: During the lab, the students learned how to calculate the freezing depression constant and determining the molar mass of a solute with a freezing point depression. These alterations are collectively known as colligative properties of solutions. The size of the change in these physical properties is proportional to the number of solute particles contained in the solution. Jun 12, 2023 · Check out this awesome Properly Written Reports About Freezing Point Depression Lab Report For Free for writing techniques and actionable ideas. The freezing-point depression of the solvent is determined from the data. Understand that freezing point depression occurs due to solute interference between the intermolecular forces of a solvent. This week, you measured the boiling point elevation of salt water solutions. These physical properties include lowering of vapor pressure, boiling point elevation, osmotic pressure, and freezing point depression. Conclusion This lab has solidified my understanding of enthalpy change. Materials Butylated hydroxytoluene (BHT A va Miller Chem 2 Lab Summary: The purpose of this lab wi ll be to focus on the idea of the fr eezing point depression, Access study documents, get answers to your study questions, and connect with real tutors for CHEM 1212L : Principles of Chemistry Laboratory II at Kennesaw State University. They include freezing point, boiling point, vapor pressure, and osmotic pressure. The more particles there are, the greater the disruption and the greater the impact on particle-dependent properties (colligative properties) like freezing point depression, boiling point elevation, and osmotic pressure. Theory & Explanation The main theory behind this experiment is that when a solute is added to a solvent, the particles in the solute interfere with the ability of the solid to produce lattice, hence decreasing the freezing point of the solution in comparison to the solvent. In your lab report briefly discuss the theory behind why the freezing point of a solution is typically lower than the freezing point of pure solvent. Colligative properties of a solution are properties that will always depend on the number of particles that are able to dissolve in a solution but not To define molality and understand the importance of molality in colligative properties. This experiment was determined by calculating the freezing point depression of a solution and molal freezing point constant of the solvent which were found to be 78°C and 4 C kg mol-1 respectively. The difference between the freezing point of a solution and the freezing point of the pure solvent, the change in freezing point, is referred to as the freezing-point depression, ΔT , and is defined according to Equation FPD. To determine the molecular weight of an unknown from the freezing point depression, the freezing points of the pure solvent and of the solution are measured, and Tf calculated. Examples of colligative properties include: 1) boiling point elevation 2) freezing point depression 3) lowering of vapor pressure and 4) osmotic pressure. Data [6 pts] unknown ID [5] two graphs - freezing point of pure water [6] two graphs - freezing point of non-electrolyte solution [6] two graphs - freezing point of electrolyte solution [6] determine the freezing point from all the graphs and place them in a table containing the freezing point, delta T, mass of H O, and masses of each solute (nonelectrolyte and electrolyte) [6] 2 Calculation This page titled 4. pdf from CHEM 1002 at Marquette University. Goals/Purpose of Experiment (2 Points, ~50 words): The purpose of this experiment is to learn and understand more about colligative properties by finding the freezing point of a cyclohexane solvent by using a thermoprobe and an ice bath. 6 ) are properties of a solvent that a solute affects, like the freezing or boiling point of the solvent. Experiment2PreLab Write Up_AReyes. (aligns with CHEM-C 126 course learning outcome 3) Determine the molar mass of a non-electrolyte given the freezing point depression. lab report experiment 17: colligative properties: freezing point depression introduction colligative properties depend on the concentration of solute particles We would like to show you a description here but the site won’t allow us. The principle behind this experiment is that the freezing point of a solvent decreases when a non-volatile solute is added to it. This is when the solvent has reached equilibrium, when the freezing point of a solution has become solid instead of liquid. In this experiment you will determine the molar mass of an unknown solid by dissolving a pre-weighed sample in a solvent, and measuring the resulting freezing point depression of the solvent. Experimentally determine the freezing point of a solution. Using Freezing-Point Depression to Find Molecular Weight I. In this experiment, you will determine the molar mass of an unknown solid by dissolving a pre-weighed sample in a solvent and measuring the resulting freezing point depression of the solvent. A physical chemistry lab report detailing a freezing point depression experiment. 0 0 Save Share Title: Colligative Properties: Freezing Point Depression Experiment # 15 Name: Deborah Shows Lab P artners: Tyrell Lewis, Ayanni Ray Course Name: General Chemistry 2 Lab Course Secti on: CH-122L Section 2 Due Dat e: 3-2-2019 More from: General Chemistry II Lab (CH 122L) More from: General Chemistry II Lab CH 122L Alcorn State University 16Documents Go to course 3 General Lab Report freezing point depression rachel blasczyk, carter pendergrass, doug macarthur, alyssa wallenta abstract the purpose of this experiment is to Feb 9, 2024 · Other than boiling point elevation, these properties also include freezing point depression and osmotic pressure. Conclusion In this experiment I learned how to use the freezing point depression equation to find the freezing point depression constant, and how to experimentally find the value using saltwater solutions and sugar water solutions. The freezing points of these solutions, which will contain known amounts of p-dichlorobenzene dissolved in cyclohexane, will be measured. It includes the objective, introduction, apparatus, chemicals, procedure, data and discussion. C. In this experiment, we will determine the freezing temperature of the pure solvent, lauric acid, the freezing temperature of a mixture of lauric acid and benzoic acid, then to calculate the freezing point depression of the mixture and the molecular weight of benzoic acid. The objective is to determine freezing point depression of solutions and the molar freezing point constant of naphthalene. 9. (aligns with CHEM-C 126 course learning outcome 4) Discussion: The freezing point of a solution is the temperature at which a solid and liquid solvent are at equilibrium. Explore freezing point depression & boiling point elevation with this chemistry lab manual. C 2-5 - Notes/Homework G. In this experiment, you will design a procedure to de-termine the freezing point depression constant of water by measuring the freezing points of multiple sugar solu-tions. During this experiment, it was Freezing Point Depression Study: Postlab 4 Discussion & Conclusion Course: General Chemistry 2 Lab (CHM 2046L) 113 documents A laboratory activity was developed to teach freezing point depression and colligative properties to introductory-level chemistry students. CHEM 1002 Colligative Properties in Action: Molar mass determination by Freezing Point Depression NAME: The determination of molar mass by freezing point depression is a common experiment in chemistry. abstract the purpose of this lab was to determine the molar mass of biphenyl using the freezing point depression method. Organic solvents are typically used in this experiment, such as 2-methyl-2-propanol or cyclohexane. Examples of these properties are boiling point elevation, freezing point depression, and osmotic pressure. Students also viewed Report 12 Determination of Ksp G. What is the conclusion of the "Colligative Properties: Freezing-point Depression and Molar Mass” lab? Please help me understand and formulate a good conclusion for my report Oct 6, 2020 · View Colligative Properties - LAB REPORT . In this experiment, you will first find the freezing temperature of the pure solvent, p-dichlorobenzene. matv weow 94biet xmh k9y ubt6k 4znow ylvn svj ucaqy