## Heat Capacity at constant Volume Pressure?

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

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Joined: Wed Nov 14, 2018 12:23 am

### Heat Capacity at constant Volume Pressure?

Will we have to know how to calculate Heat Capacity at constant Volume and Pressure

Kenan Kherallah 2C
Posts: 78
Joined: Fri Sep 28, 2018 12:17 am

### Re: Heat Capacity at constant Volume Pressure?

I'm not sure but its not as bad as what the textbook makes it look like: for constant volume its 3/2R, 5/2R, or 3R for atoms linear and then nonlinear molecules. For consant pressure its 5/2R, 7/2R, or 4R.

aisteles1G
Posts: 117
Joined: Fri Sep 28, 2018 12:15 am

### Re: Heat Capacity at constant Volume Pressure?

the constants and equation sheet posted on the chem class website has Cv and Cp for ideal gasses so as long as the problem says its an ideal gas you can just use the given ones I'm pretty sure so all you'd have to know is that Cv means specific heat capacity at constant volume bc of the subscript and that R is 8.3, hope this helps!