Achieve Q18 - Week 3/4

[Lynne Zhao 2B]

Can someone explain the difference between the constant‑volume molar specific heat and the constant‑pressure molar specific heat and how they relate to each other?

[Alena Zhu 2I]

The constant-volume molar specific heat is the amount of heat it takes to increase the temperature of one mole of a gas by 1 degree Celsius while maintaining a constant volume; for monatomic ideal gases this value can be represented by 3R/2 and for diatomic ideal gases this value can be represented by 5R/2. The constant-pressure molar specific heat is the amount of heat it takes to increase the temperature of one mole of gas by 1 degree Celsius while maintaining constant pressure, and it's related to the constant-volume molar specific heat by the equation Cp = Cv + R; Cp = constant-pressure molar specific heat, Cv = constant-volume molar specific heat, R = gas constant.

Hopefully that is helpful to you!