Description
Merk: 3B SCIENTIFIC
Experiment Procedure
• Measure the temperature of aluminium and copper calorimeters as a function of the electrical work done.
• Check that the change in temperature is proportional to the electrical work and verify the first law of thermodynamics.
• Determine the specific heat capacities of copper and aluminium.
Summary
This experiment investigates how the internal energy of copper and aluminium calorimeters can be increased by electrical work. As long as the aggregate state does not change and no chemical reactions occur, it is possible to determine the increase in internal energy from the rise in temperature to which it is proportional. In order to prevent heat being transferred from the calorimeters to their surroundings, the series of measurements should start at a temperature somewhat below the ambient temperature and finish at a temperature only slightly above that of the surroundings.
Required Apparatus
1 Copper Calorimeter [1002659]
1 Alumiunium calorimeter [1017897]
1 Temperature sensor [1017898]
1 Pair of adapter cables with 4 mm safety plugs/2 mm plugs [1017899]
1 Pair of Safety Experimental Leads, 75cm, red/blue [1017718]
1 Digital Multimeter P1035 [1002781]
1 DC Power Supply 0 – 20 V, 0 – 5 A (230 V, 50/60 Hz) [1003312]
