The combustion of benzoic acid occurs according to expression C_(6)H_(5)COOH(s) + 7(1)/(2)O_(2)(g) hArr 7CO_(2) + 3H_(2)O (l) in a bomb calorimeter at 25^(@) C . If it liberates Q_(v) "mol"^(-1) , then DeltaH for reaction is

The combustion of benzoic acid occurs according to expression C_(6)H_

1.	The combustion of benzoic acid occurs according to expression C_(6)H_(5)COOH(s) + 7(1)/(2)O_(2)(g) hArr 7CO_(2) + 3H_(2)O (l) in a bomb calorimeter at 25^(@) C . If it liberates Q_(v) "mol"^(-1) , then DeltaH for reaction is
Answer» `-Q_(v)+(RT)^(1//2)` `-Q_(v)+(RT)^(-1//2)` `-Q_(v)+(1)/(2)RT` `-Q_(v)-(1)/(2)RT` SOLUTION :`DeltaH=DeltaE+DeltanRT`, `Deltan` for reaction =7-7.5=-0.5 `DeltaH=-Q_(v)-(1)/(2)RT` (In bomb calorimeter the reaction is done at a constant VOLUME)