Department of ChemistryBelow are many of the experimental steps you will perform in this lab. Be sure to consult the procedure for the detailed instructions. Click on an image to open an enlarged view.
| 1. |  |
Components of the calorimeter: outer aluminum cup, insulating liners, inner aluminum cup, cover (with heating resistor), and electrical cables for use in Part A. |
| 2. |  |
Follow the directions in Part A, Steps 1-3 to calibrate the output of the power supply. |
| 3. |  |
For Part A, the electrical cables run from the top of the calorimeter cover to the power supply. After Part A, you will no longer need any power connected to the calorimeter. |
| 4. |  |
The outer and inner cups and insulating liner will already be assembled when you check out the calorimeter from the stockroom. You should not need to dis-assemble this, but be aware of the liner and BE VERY CAREFUL NOT TO GET THE LINER WET as you add water/acid/base to the calorimeter or remove reaction products. A wet liner will change the value of the calorimeter heat capacity you calculate in Part A and, as a result, introduce error to the rest of your calculations for this experiment. |
| 5. |  |
After you have delivered the required 60 g of DI water (or other required reactants) and a stir bar to the assembled calorimeter, place the cover on the calorimeter so that the heating resister is in the water. |
| 6. |  |
Insert the digital thermometer through the hole towards the edge of the calorimeter cover so that the probe can measure the temperature of the water inside. For each part of this lab, you will place different reactants in the inner cup of the calorimeter and measure the temperature both before and after the reaction. |