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Cam Bear 2F
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Joined: Thu Jul 27, 2017 3:01 am


Postby Cam Bear 2F » Tue Feb 13, 2018 9:55 pm

For this problem "show that, if another molecule such as ethene is present to act as a hydrogen acceptor then the overall process is spontaneous" why do you have to multiply the reaction of ethene with hydrogen by 3?

Suchita 2I
Posts: 59
Joined: Fri Sep 29, 2017 7:04 am

Re: 9.99

Postby Suchita 2I » Tue Feb 13, 2018 10:00 pm

Since the question refers to a hydrogen acceptor I would assume that it means that all the hydrogen produced would be accepted by the ethene. Since 3 moles are produced, the equation for the hydrogenation of ethene is multiplied by 3 to cancel out the hydrogen produced. I would think of this as a Hess' Law-like approach, if that makes sense.

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