Name ________________________________________
Hour ___________
Lab #6 – Heat Exchanged by Metals
Use the interactive calorimeter at the following site to calculate the Specific Heat
Capacity of each metal. Complete the chart.
http://group.chem.iastate.edu/Greenbowe/sections/projectfolder/flashfiles/thermoc
hem/heat_metal.html
Use 50g of each metal at 140°C and 100 mL of water at 20°C for each trial below.
Metal
Mass of Initial T Mass of Initial T Final T of
Metal (g)
of
Water (g)
of
Water
Metal
Water and Metal
(°C)
(°C)
(°C)
Silver
Gold
Copper
Iron
Metal X
Metal Y
Analysis
1. Calculate the theoretical equilibrium temperature for each metal.
2. Using the actual equilibrium temperatures to calculate the percent error of your
experimental results.
3. Use your calculated specific heat capacities to determine the identity of the two
unknown metals.
Use the specific heat capacity values to identify metals X and Y.
Metal X is _________
Metal Y is __________
Post-Lab Question:
A piece of brass is heated to 98.7°C in a boiling water bath. The brass is quickly
transferred to a calorimeter containing 102.76 g of water at 18.5°C. The final
temperature of the calorimeter and the brass is 23.5°C. Calculate the specific heat
capacity of the brass.