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Example Questions
Example Question #1 : Thermochemistry
The heat capacity of a bomb calorimeter assembly is . What is the heat of combustion of
of sucrose in a bomb calorimeter that results in the temperature rising from
to
?
A bomb calorimeter is a device used to measure the quantity of heat change for a process. The heat of a reaction which is denoted as , is the negative of the thermal energy gained by the calorimeter:
The heat capacity of a calorimeter is:
Plugging the values given into the equation gives:
Using the relation provided earlier:
Because we are dealing with 1.1 grams of sucrose, the heat of combustion of sucrose is:
Example Question #21 : Thermochemistry And Thermodynamics
The heat capacity of a bomb calorimeter assembly is . What is the heat of combustion of
of caffeine in a bomb calorimeter that results in the temperature rising from
to
?
A bomb calorimeter is a device used to measure the quantity of heat change for a process. The heat of a reaction which is denoted as q, is the negative of the thermal energy gained by the calorimeter:
The heat capacity of a calorimeter is:
Plugging the values given into the equation gives:
Using the relation provided earlier:
Because we are dealing with 1.65 grams of sucrose, the heat of combustion of sucrose is:
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