<html> <head> <title>GenChemLab documentation - freezing point depression</title> </head> <body bgcolor="#FFFFFF"> <p><b>Freezing point depression lab</b> <p>The freezing point depression lab simulates dissolving substances in water and chilling in an ice/water/salt bath until freezing. <p><b>Setup</b> <p>The Freezing-Point menu provides two options. The first option sets up the experiment. Select the compound and mass to be used, and check the box to dissolve it in a given amount of water. Your lab manual should have details on experiment setup. <p>The second menu option sets the starting and target temperature. These are preset, but this menu option must be selected prior to starting the experiment. <p><b>Running the experiment</b> <p>Click on the beaker to start the experiment. The indicator on the Chill-O-Matic(tm) pedestal will turn blue, indicating cooling is occuring. The temperature is decreased by 0.05 C per second, so students will need to pay attention! The freezing transition is set to be obvious. Clicking the beaker again stops time. <p><a href="index.html">return to help index</a> </body> </html>
