Example from Lecture
Posted: Tue Feb 13, 2018 11:39 am
In lecture on Monday Lavelle gave the following example problem:
Oxygen diflouride is a colorless gas the reacts rapidly with water vapor to produce O2, HF, and heat:
OF2 (g) + H2O (g) --> O2 (g) +2HF (g) ∆H = -318 kJ
What is the change in internal energy for the reaction of 1.00 moles of OF2 gas at 298k.
I am slightly confused, because I thought when we have a system at constant temperature ∆U = 0, however in this case we found that ∆U = -320 KJ. Does this have to do with the fact that we are not using ideal gases?
Oxygen diflouride is a colorless gas the reacts rapidly with water vapor to produce O2, HF, and heat:
OF2 (g) + H2O (g) --> O2 (g) +2HF (g) ∆H = -318 kJ
What is the change in internal energy for the reaction of 1.00 moles of OF2 gas at 298k.
I am slightly confused, because I thought when we have a system at constant temperature ∆U = 0, however in this case we found that ∆U = -320 KJ. Does this have to do with the fact that we are not using ideal gases?