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The difference heats of reaction at cons...

The difference heats of reaction at constant pressure and constant volume for the reaction `2C_(6)H_(6)(l)+15O_(2)(g)rarr 12CO_(2)(g)+6H_(2)O(l)` at `25^(@)C` in KJ is

A

`+7.43`

B

`+3.72`

C

`-7.43`

D

`-3.72`

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta H= Delta E+ Delta n_(g)RT`
`(Delta H-Delta E)= Delta n_(g).RT=- 3xx8.314xx10^(-3)xx298`
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