The heat of formation of `H_(2)O(l)` is `-68.0` kcal, the heat of formation of `H_(2)O(g)` can logically be

The heat of formation of H_(2)O_((l)) is -286.2 kJ. The heat of formation of H_(2)O_((g)) is likely to be

The enthalpy of the reaction : H_(2)O_(2)(l)toH_(2)O(l)+(1)/(2)O_(2)(g) is -23.5 kcal mol^(-1) and the enthalpy of formation of H_(2)O(l) is -68.3 kcal mol^(-1) . The enthalpy of formation of H_(2)O_(2)(l) is

The enthalpy of the reaction H_(2)O_(2) ("?") to H_(2) O ("?") + 1//2 O_(2) (g) is -23.5 kcal mol^(-1) and the enthalpy of formation of H_(2) O (?) is -68.3 kcal mol^(-1) . The enthalpy of formation of H_(2) O_(2) (?) is -

The heat of combustion of ethyl alcohol is -300 kcal. If the heats of formation of CO_(2)(g) and H_(2)O(l) are -9.3 and -68.5 kcal respectively, calculate the heat of formation of ehtyl alcohol.

The heat of combustion of ethyl alcohol is -300 kcal. If the heats of formation of CO_(2)(g) and H_(2)O(l) are -9.3 and -68.5 kcal respectively, calculate the heat of formation of ehtyl alcohol.