The question reads:
Oxygen difluoride is a colorless, very poisonous gas that reacts rapidly and exothermically with water vapor to produce O2 and HF:
OF2(g) + H2O(g) -> O2(g) + 2 HF(g) deltaH = -318 kJ
What is the change in internal energy for the reaction of 1.00 mol OF2?
I understand that we have to find q, and to use -delta nRT, but how do you know what the temperature is? The answer key uses 298 Kelvin, but where did that come from?
Thank you in advance!
4D.7
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Re: 4D.7
298K is the most common temperature used in data for reaction enthalpies, so we just have to assume that when no temperature is stated.
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Re: 4D.7
When do you need to change the temperature from celsius to kelvin and when is it okay to leave T as celsius in an equation?
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