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### Molar Heat Capacity at Cp s. Cv

Posted: Thu Jan 30, 2020 11:28 am
I am kinda confused on the differences between the molar heat capacity of a gas at constant volume versus constant pressure. Why does it matter in terms of molar heat (is it applicable for specific heat as well)? Can you use the q=nCdeltaT equation for either situation?

### Re: Molar Heat Capacity at Cp s. Cv

Posted: Thu Jan 30, 2020 1:30 pm
molar heat capacity of the same gas is different at a constant pressure vs a constant volume, you can use that equation with both Cp and Cv it would just result in a different answer for Cp vs Cv

### Re: Molar Heat Capacity at Cp s. Cv

Posted: Thu Jan 30, 2020 1:35 pm
Subscript p refers to constant pressure and subscript v refers to constant volume.

### Re: Molar Heat Capacity at Cp s. Cv

Posted: Thu Jan 30, 2020 3:57 pm
P is the constant pressure and V indicates temperature.

### Re: Molar Heat Capacity at Cp s. Cv

Posted: Thu Jan 30, 2020 4:05 pm
Both can be used for a gas, however they do not yield the same answer. The p subscript indicates constant pressure while the v is for volume.