Calorimetry Worksheet - Answer Key
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- What is calorimetry?
An experimental method that allows one to determine the amount of heat energy a system gives/takes during the course of a reaction.
- What type of calorimeter maintains constant pressure?
Coffee Cup Calorimeter
- ΔH = nCp∆T = qp or ΔH = mCp∆T = qp
- What type of calorimeter maintains constant volume?
Bomb Calorimeter
- ΔE = nCv∆T = qV or ΔE = mCv∆T = qV
- A biological experiment requires water to be 37.0°C. The temperature of cold water is 22.0°C and the temperature of hot water is 55.0°C. If a student starts with 90.0g of cold water, what mass of hot water must be added to reach 37.0°C?
Mhot water = 75.0g
- A 0.1964g sample of C6H4O2 is burned in a bomb calorimeter that has a heat capacity of 1.56kJ/°C. The temperature of the calorimeter increases by 3.2°C. Calculate the energy of combustion of C6H4O2 per gram.
qcal = 4.99 kJ
Energy pf combustion per gram = -25.4 kJ/g