## delta u

isochoric/isometric: $\Delta V = 0$
isothermal: $\Delta T = 0$
isobaric: $\Delta P = 0$

Belle Calforda3f
Posts: 67
Joined: Fri Sep 29, 2017 7:07 am

### delta u

If temperature does not change, can the internal energy change? If not, can someone please explain?

Cassidy 1G
Posts: 54
Joined: Fri Sep 29, 2017 7:07 am

### Re: delta u

If pressure increases, internal energy can increase even if temperature is constant. This happens when we are NOT dealing with ideal gases because at high pressure, molecules in non-ideal gases repel each other.

Posts: 60
Joined: Thu Jul 13, 2017 3:00 am
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### Re: delta u

internal energy cannot change without a temperature change; this means for isothermal reactions delta U is zero. this is because of the equation delta U=(3/2)nR(delta T)---it should be on the equation sheet as internal energy for an ideal gas.