Santa Monica College Chemistry 11
Calorimetry and Hess’s Law Page 1 of 4
Name: Date:
Lab Partner: Lab Section:
Lab Report: Calorimetry and Hess’s Law
Metal + HCl Reaction
Experimental Data
Assigned Metal:
Trial 1 Trial 2
Mass of dry, empty calorimeter
Mass of calorimeter plus HCl
Mass of HCl used
Mass of dry, empty beaker
Mass of beaker plus metal
Mass of metal used
Initial (equilibrium) temperature of HCl
Final (maximum) temperature of mixture
Data Analysis
1) Write the balanced equation for the reaction between your assigned metal and HCl. All
balancing coefficients should be whole numbers.
2) Complete the table below with the results of your calculations.
Trial 1 Trial 2
Total mass of mixture, m
Temperature change of mixture,
∆
T
SHC of mixture, c (use SHC of water)
Heat absorbed by mixture, in J
Heat released by reaction, in J
∆
Hrxn in J/g of metal used
∆
Hrxn in kJ/mol of metal used
∆
Hrxn in kJ for the rxn as balanced in (1)
Average
∆
Hrxn in kJ
