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Physical Chemistry

Cool goIITian

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3 Mar 2008 21:52:04 IST

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calulate the resonance energy of buta-1,3-diene from following datas_.CH^2=CH-CH=CH^2+2H^2

CH^3-CH^2-CH^-2-CH^3

H= -346 KJ GIVEN BOND ENTHALPIES OF C-H=400KJ/MOL H-H =410KJ/MOL C-C=345KJ/MOL C=C=610KJ/MOL

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DIBYA JAGADDEV

Cool goIITian

Joined: 9 Sep 2007

Posts: 39

5 Mar 2008 22:08:16 IST

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someone answer this question

rohit

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Joined: 24 Jan 2008

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5 Mar 2008 22:57:02 IST

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i am not sure but is the answer
944 KJ

if this is correct then ill post my method of working

Karthik M

Blazing goIITian

Joined: 1 May 2007

Posts: 2830

6 Mar 2008 14:52:25 IST

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Its a simple question. Calculate the value of

H from the data given. The experimental value of

H will be lesser than the calculated value due to resonance stabilisation. The difference between the two will give u the required result.

dev_22oct

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Joined: 27 Feb 2008

Posts: 426

6 Mar 2008 15:21:42 IST

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ans is 96 kj/mol.

calculate the heat of formation of 1,3-butadiene by using the bond energy data and then subtract it from given heat of formation.

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