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Thermodynamics: definition of specific heat at constant volume (cᵥ) Identify what we call the heat required to raise the temperature of a unit mass of a gas by one degree when the volume is held constant. Choose the correct option.

Difficulty: Easy

specific heat at constant volume
specific heat at constant pressure
kilo Joule
none of these

Correct Answer: specific heat at constant volume

Explanation:

Concept
The specific heat at constant volume, denoted c_v, is defined as the heat required per unit mass per degree temperature rise when the volume is kept constant.

Why not others?
c_p (specific heat at constant pressure) applies when pressure is constant; 'kilo Joule' is a unit of energy, not a definition.

Final Answer
specific heat at constant volume

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