Constant Volume Calorimetry Quiz

What is the primary purpose of constant volume calorimetry?

• To determine the internal energy change (delta E) for chemical reactions

• To measure the change in pressure during a reaction

• To calculate the volume change in a reaction

• To measure the speed of a chemical reaction

How does constant volume calorimetry simplify the measurement of delta E?

• By canceling out the work term

• By reducing the mass of the system

• By eliminating the need to measure temperature

• By increasing the pressure

What is the role of the bomb in a bomb calorimeter?

• To contain the sample and oxygen for the reaction

• To stir the water jacket

• To measure the pressure of the reaction

• To record the temperature change

What is the purpose of the water jacket in a bomb calorimeter?

• To increase the pressure inside the bomb

• To ignite the sample

• To provide oxygen for the reaction

• To absorb heat and measure temperature change

How is the heat capacity of a calorimeter typically determined?

• By measuring the volume change

• By using a reaction with a known delta E

• By measuring the pressure change

• By calculating the mass of the calorimeter

In the example problem, what is the initial temperature of the benzoic acid reaction?

• 31.2°C

• 30.0°C

• 23.5°C

• 25.0°C

What is the heat capacity of the calorimeter used in the example problem?

• 5.50 kJ/°C

• 6.00 kJ/°C

• 4.50 kJ/°C

• 5.01 kJ/°C

What is the final temperature of the benzoic acid reaction in the example problem?

• 23.5°C

• 31.2°C

• 28.0°C

• 30.0°C

How is the amount of heat released by the reaction calculated in the example problem?

• By adding the heat absorbed by the calorimeter

• By subtracting the heat absorbed by the calorimeter

• By multiplying the heat absorbed by the calorimeter by -1

• By dividing the heat absorbed by the calorimeter by 2

What is the molar mass of benzoic acid used in the example problem?

• 110.00 g/mol

• 150.00 g/mol

• 100.00 g/mol

• 122.12 g/mol