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Heat of combustion of benzoic acid (C(6)...

Heat of combustion of benzoic acid `(C_(6)H_(5)COOH)` at constant volume at `25^(@)C` is `-3233` kJ/mole. When 0.5 g of benzoic acid is burnt in bomb calorimeter, the temperature of calorimeter increased by `0.53^(@)C`. Now in the same bomb calorimeter 1g of `C_(2)H_(6)` burnt then temperature increased by `2.04 C`. `DeltaH` for combustion of `C_(2)H_(6)` is

A

`-1530`KJ/mole

B

`-1536.2`KJ/mole

C

`-1522.8`KJ/mole

D

`+1536.2`KJ/mole

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaU=Zxxthetaxx(M)/(W),DeltaH=DeltaU+DeltanRT`
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