## Constant Volume

$\Delta U=q+w$

104969854
Posts: 36
Joined: Fri Sep 29, 2017 7:05 am

### Constant Volume

At constant volume, are q, deltaU, and delta H all equal?

Shannon Wasley 2J
Posts: 71
Joined: Fri Sep 29, 2017 7:06 am
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### Re: Constant Volume

At constant volume, w = 0, therefore, the equation delta U = q +w would be delta U = q. However, q would only be equal to delta H if the reaction was also at constant pressure.

Cristina Sarmiento 1E
Posts: 52
Joined: Wed Nov 16, 2016 3:02 am

### Re: Constant Volume

When w = 0, delta U = q.
q is only equal to delta H when it is q is at constant pressure.