Name: Ima Student Lab Partners: None
Date of Experiment: June 4th – 6th 2011 Location: My apartment Course Number: CHE112
Abstract: In this experiment, the objective was to observe the effects of some of the colligative properties of solutions.
The freezing points of distilled water and saltwater were measured, and found to both be about 0 °C. The osmotic effects of different solutions on a dialysis bag and an egg membrane were observed and it was possible to distinguish between hypertonic and hypotonic solutions. Experiment and Observation: The first step in this experiment was to make an ice water bath.
This ice water bath was used to find the freezing point of pure distilled water. A test tube of the distilled water was placed in the water bath and the temperature was recorded every 30 seconds until it remained consistent for five consecutive readings. The pure water test tube was removed and a test tube of a distilled water and salt solution was placed in the ice water bath. Again the temperature of the water and salt solution were recorded for five consecutive readings. Data tables were used to create graphs and find the freezing points of the pure water and of the saltwater