Question

Why does heat capacity change with temperature?

Answer 1

Heat capacity is a physical property that is constant for a specific matter and therefore, it is constant and will not change with temperature.

Explanation:

Heat capacity by definition is the amount of heat needed to increase the temperature of one gram (specific heat capacity) or one mole (molar heat capacity) by on degree (`1^@C`).

Therefore, heat capacity is a physical property that is constant for a specific matter and therefore, it is constant and will not change with temperature.

However, what changes is the amount of heat, which is represented by:

`q=mxxsxxDeltaT`

where, `q` is the amount of heat,
`s` is the specific heat capacity,
`DeltaT` is the change on temperature.

Here is a video that further explains this topic:
Thermochemistry | Enthalpy and Calorimetry.