Experiment 7: Calorimetry (Specific Heat Capacity)

Question 1

Purpose of Experiment 7

Answer 1

Measure the Specific Heat capacity of Aluminum and an unknown metal alloy

Question 2

Heat Capacity

Answer 2

Amount of heat energy required to raise the temperature of an object by one degree (J/K or C)

Question 3

Heat Capacity Equation

Answer 3

q = (heat capacity )*(change in temperature)

q=mc(delta T)

Question 4

Specific heat capacity (c)

Answer 4

The amount of heat required to raise the temperature of one gram of material by one degree Kelvin

Question 5

Calorimeter

Answer 5

A device used to measure the heat released or absorbed by a physical or chemical process

Question 6

Law of Thermodynamics

Answer 6

q(rxn)=-q(cal)

c(Al)m(Al)deltaT(Al)=-(c(w)V(w)d(w))delta T(w)

Question 7

Procedure

Answer 7

1. Weigh metal block and record the amount of water used
2. Record the initial temperature after equilibrium
3. Record temperature every 10 seconds
   Find specific heat of aluminum from equation

Question 8

What changes in your experimental data would result from using 200.0 mL of water in the calorimeter for the aluminum experiment?

Answer 8

If you were to use 200 mL of water it would change the specific heat of aluminum. It would require more temperature to raise the whole thing by one degree