For complete combustion of methanol CH _ 3 OH(l) + (3)/(2) O _ 2...

For complete combustion of methanol

${CH}_{3}OH\left(l\right) + \dfrac{3}{2}{O}_{2}\left(g\right) \to {CO}_{2}\left(g\right) + 2{H}_{2}O\left(l\right)$ the amount of heat produced as measured by bomb calorimeter is $726kJ{mol}^{- 1}$ at $27 ° C$. The enthalpy of combustion for the reaction is $- xkJ{mol}^{- 1}$, where $x$ is
integer)
(Given : $R = 8 . 3{JK}^{- 1}{mol}^{- 1}$)