# A lab experiment to determine the molar mass of a solute from the freezing point depression of a sol

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. Colligative properties: freezing-point depression and molar mass lab report not the solute in this experiment, the molar mass of sulfur will be determined using . Lab 7 - determination of the molar mass of an unknown solid by freezing point depression goal and overview in the first part of the lab, a series of solutions will be made in order to determine the freezing point depression constant, k f, for cyclohexane.

Are known, the molar mass of the solute can be determined by measuring the freezing points of the pure solvent and the solution in this experiment you will determine the molar mass of a liquid using freezing-point depression. To determine the molar mass of an unknown solid using the colligative property of freezing point depression when a small amount of nonvolatile solute is dissolved in a volatile solvent, the vapor pressure of the solvent over the solution will be less than the vapor pressure of the pure solvent at . In this video we will learn how to determine the molar mass of an unknown solute but using the freezing point depression of the solution using freezing point depression (colligative . Determination of a freezing point depression constant you will be able to determine the molar mass of the unknown compound mass of your unknown solute .

Experiment 13: determination of molecular weight by freezing point depression the molality of a solution can be expressed in terms of the molar mass of the solute. Know the mathematical equation for determining molality from freezing point depression know the units for each variable be able to calculate the molecular weight of a solute if you are given the experimental data. Experiment 14: molar mass of a liquid abstract the purpose of this experiment was to determine molar mass of an unknown solute throughout the experiment, the freezing point was discovered for the solvent and solution, and more solute was added to the solution to lower the freezing point. By measuring the freezing point depression, δt, and the mass of benzoic acid, you can use the formula above to find the molecular weight of the benzoic acid solute, in g/mol objectives in this experiment, you will. 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.

Chemistry 1212 k unit 2 + lab in the freezing point depression lab, what is the solvent studied to learn a method to determine the molar mass of a solute in . Molar mass from boiling point elevation or freezing point depression the addition of a nonvolatile solute to a solvent causes the boiling point of the solvent to increase and the freezing point of the solvent to decrease. Determination of molar mass by freezing-point depression • find the molar mass of a solute by the method of freezing-point depression in this experiment .

Pre-lab video for the determination of molar mass by freezing point depression experiment in chem 210l, general chemistry ii, at minnesota state university moorhead. Molecular mass by freezing point depression lab fp1 point depression can be used to calculate the molecular weight of a soluble solid the mass of solute and . The goal of this experiment was to determine the molar mass of aspirin using the freezing point depression method first, the freezing temperature of the pure solvent and t-butanol were determined then by adding a known mass of aspirin to a known mass of t-butanol, the lowering of the freezing temperature of the solution was determined. Alternatively, if the freezing point depression constant, kf, is given or known, the freezing point data, δt, can be used to determine the molar mass (mm, g/mol) of an unknown in solution first, you determine the molality of a solution from the experimental freezing point depression.

## A lab experiment to determine the molar mass of a solute from the freezing point depression of a sol

Experiment 5 freezing point depression values from your lab section and calculate the average by mass, what is the predicted freezing point of this solution . Determination of molar mass by freezing point depression lab from the graph i determined the freezing point of t butanol as 23 c please check if delta tf or molality of t butanol solution is correct. Chemistry experiment 3 colligative properties – freezing point depression objective to determine the molar mass of an ethyl alcohol solute by measuring the freezing point depression of a solution of this solute in a solvent as compared the freezing point of the pure solvent introduction .

- In this experiment, the freezing point depression constant for you can calculate the molar mass of the solute from the solution the file “lab 2 freezing .
- Transcript of molecular mass by freezing point depression lab molecular mass by freezing point depression prelab purpose graphs conclusion 1 to determine the molecular mass of an unknown substance by finding the freezing point of two solutions (bht and para-dichlorobenzene, and bht and the unknown.

In this experiment we will investigate the phenomenon of freezing-point depression and determine the molar mass of an unknown solute the relationship between the lowering of the. First semester of chemistry lab on freezing point depression determining molar mass by freezing point depression of the solute in this experiment, i used . Freezing point depression with anitfreeze lab to determine the freezing point depression of can determine the molar mass since the kg units cancel each other .