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The following are heats of reactions : ...

The following are heats of reactions `:`
`(A)` `DeltaH_(f)^(@)` of `H_(2)O(l)=-68.3kcal` `mol^(-)`
`(B)` `DeltaH_(comb)^(@)` of `C_(2)H_(2)=--337.2 kcal` `mol^(-)`
`(C)` `DeltaH_(comb)^(@)` of `C_(2)H_(4)=-363.7Kal` `mol_(-)`
Then the heat charge for the reaction `:-`
`C_(2)H_(2)+H_(2)rarrC_(2)H_(4)`

A

`-716.1Kcal`

B

`+337.2Kcal`

C

`-41.8Kcal`

D

`-579.5Kcal`

Text Solution

Verified by Experts

The correct Answer is:
C
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