8.49

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Robert Estrada
Posts: 50
Joined: Fri Sep 29, 2017 7:05 am

8.49

Postby Robert Estrada » Tue Jan 23, 2018 1:38 pm

Oxygen Difluoride is colorless, very poisonous gas that reacts rapidly with water vapor to produce 02, HF, and heat:


What is the change in internal energy for the reaction of 1.00 mol OF2?

Merzia Subhan 1L
Posts: 33
Joined: Thu Jul 13, 2017 3:00 am

Re: 8.49

Postby Merzia Subhan 1L » Tue Jan 23, 2018 1:56 pm

You would use the formula delta U = q + w. q =deltaH. w = delta n*R*T. We assume it is at room temperature so you use 298K for T. n is 1 bc 3 moles of gas are produced and 2 moles of gas were there initially. The enthalpy is in kJ so don't forget to convert it into Joules when adding to the w bc the R is given in Joules

Robert Estrada
Posts: 50
Joined: Fri Sep 29, 2017 7:05 am

Re: 8.49

Postby Robert Estrada » Tue Jan 23, 2018 2:01 pm

Thank You!


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