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Topic: thermochemistry help  (Read 3301 times)

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Offline Moneyking

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thermochemistry help
« on: December 13, 2012, 05:53:25 PM »
an endothermic reaction was found to have an activation energy of 100kj. if this reaction is reversed, the activation energy is only 20kj. What is the value of delta H for the endothermic reaction?

I think the answer is -80kj or 80kj, not so sure :s
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Offline curiouscat

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Re: thermochemistry help
« Reply #1 on: December 13, 2012, 10:56:45 PM »
Has to be +80 if it is endothermic.
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Offline mbcww

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Re: thermochemistry help
« Reply #2 on: December 14, 2012, 02:04:15 AM »
+80kj
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