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The difference between heat of reaction ...

The difference between heat of reaction at constant pressure and at constant volume for the reaction
`2C_6H_6(l) + 15O_2(g) to 12CO_2(g) + 6H_2O(l)`

A

`-7.43 `

B

`+3.72 `

C

`-3.72 `

D

`+7.43 `

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