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 Message Boards » » Heats of formation using bond energies Page [1]  
smcrawfo
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so I know that its the bonds broken-bonds formed, but i am having difficulty knowing which are broken adn which are formed. for example: H2N-NH2. would it be two ammonia atoms that each have a N-H bond broken that come to together to form one N-N bond?

2/11/2007 11:59:36 AM

CharlieEFH
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is the reaction:

H2N-NH2 -> 2H2 + N2 ?

if so i don't think you form the N-N bond, but its been awhile so i might be mistaken

2/11/2007 12:30:22 PM

DaveOT
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If that's the reaction, then you would form two additional N-N bonds...

2/11/2007 2:46:00 PM

CharlieEFH
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you'd form an N=N bond and 2 H-H bonds

[Edited on February 11, 2007 at 6:54 PM. Reason : god its been awhile, you're right...2 more]

2/11/2007 6:51:06 PM

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