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Consider the following two reactions: ...

Consider the following two reactions:
i. Propene `+H_(2) rarr` Propane, `DeltaH_(1)`
ii. Cyclopropane `+H_(2) rarr` Propane, `DeltaH_(2)` Then, `DeltaH_(2) - DeltaH_(1)` will be:

A

0

B

`2BE_(C-C)-BE_(C=C)`

C

`BE_(C=C)`

D

`2BE_(C=C)-BE_(C-C)`

Text Solution

Verified by Experts

The correct Answer is:
B
`CH_(3)-CH=CH_(2)+H_(2)toCH_(3)-CH_(2)-CH_(3),DeltaH_(1)=(BE_(C=C)+BE_(H-H))-(2BE_(C-H)+BE_(C-C))`
`+H_(2)toCH_(3)-CH_(2)-CH_(3),`
`DeltaH_(2)=(BE_(C-C)+BE_(H-H))-(2xxBE_(C-H))`
`DeltaH_(2)-DeltaH_(1)=2BE_(C-C)-BE_(C=C)`
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OP TANDON-Chemical Thermodynamics and Thermochemistry-Objective Question Level B
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