Determination of Molar Mass by Freezing Point Depression
Investigators: September 1, 2009
1. Objective:
- To determine the molar mass of an unknown mixture by measuring the freezing point.
- To depress the freezing point of H2O by adding Ethanol.
2. Experimental Methods:
2.1. General Procedure: The procedure was followed from the lab manual, Principles of Chemistry, CHEM 1211L & CHEM 1212L Laboratory Experiments, A Project Oriented Approach, 4th Edition, 2009-Fall, p. 105-114.
2.2. Modifications:
- A glass beaker was used instead of a Styrofoam cup for solution run #1 & #2.
- Data was recorded for temperature below -10°C for the solution.