Question $2$

Methanol $(C{H}_{3}OH)$ is burned with $50\%$ excess air. Write the balanced $(10$ marks$)$ for complete and actual combustion, and then determine $($a$)$ the actual reaction equations and $($b$)$ the enthalpy of the complete combustion of Methanol actual air$-$to$-$fuel ratio, assuming $H_{2}O$ in the products is in the liquid form.

Useful relations:

$AF=\frac{m_{\text{a}\text{i}\text{r}}}{m_{\text{f}\text{u}\text{e}\text{l}}}$

$h_C=H_P-H_R={\displaystyle \underset{?}{\overset{?}{}}}\frac{N_p}{b}ar(h{)}_{f,P}-{\displaystyle \underset{?}{\overset{?}{}}}\frac{N_R}{b}ar(h{)}_{f,R}$

table $3\mathrm{.}2$

Standard enthalpies of formation

$\backslash$table$[[$Species$,$Staret,$h_f.$ MJ$/$kmol$],[O_2,$Gas,$],[N_1,$Gas,$0$