Cv and Cp

[Ariana Iranmahboub1G]

When should we use Cv (molar heat capacity of a gas at constant volume) over Cp (molar heat capacity of a gas at constant pressure) when we solve for q=nC(deltaT) or q=mC(deltaT)?

[Renee Grange 1I]

You would use Cv when the system is at constant volume and Cp when the pressure is constant. For example, for a bomb calorimeter question you would use Cv because the system is at constant volume.

[TarynD_1I]

Use Cv when the system is at a constant volume, and Cp when the system is at a constant pressure, I'm pretty sure it'll either be stated in the problem or will be able to be inferred by other info.

[Brandon Tao 1K]

I think what Renee tried to say was that constant pressure is when the system is explicitly at constant pressure