The heat produced by the combustion of `2.0g` of benzene in a bomb calorimeter was found to be `123.6 kJ` at `25^(@)C`. Calculate the enthalpy of combustion of benzene at `25^(@)C`.

Explanation

Energy produced for combustion of `1mol (78g)` of benzene `=(123.6)/(2) xx 78 = 3260.4 kJ mol^(-1)`
`C_(6)H_(6)(l) +(15)/(2)O_(2)(g) rarr 6CO_(2)(g) +3H_(2)O(l)`
`Deltan_(g) = - (3)/(2)`
`DeltaH = 3260.4 -(3)/(2) xx 8.314 xx 298 =- 3264.1 kJ`