Why is the molar specific heat of a gas at constant pressure greater than that at constant volume?

1. A Option A: At constant pressure part of the heat is used to do work as the gas expands
2. B Option B: At constant pressure the internal energy rises more for the same temperature change
3. C Option C: At constant volume heat escapes through the container walls
4. D Option D: At constant volume the gas does extra work on its surroundings

Answer checked 11 October 2026 · How we write and check questions