A $50$:$50($by volume$)$ mixture of CO and CH$4$ at $500$K is burnt with $20\%$ excess air $(20\%$ in

excess of what is needed for complete combustion$)$ at $298$K$.$ What is the adiabatic flame

temperature? Use the following data:

HT

o $$ H$298$

o

$,$ J$/$mol $$H$298$

f

$,$ J$/$mol

CO $36\mathrm{.}6$T $-16400-111000$

CO$261\mathrm{.}0$T $-30500-394000$

H$2$O$($g$)47\mathrm{.}4$T $-22200-242000$

CH$446\mathrm{.}2$T $-13800-75000$

N$236\mathrm{.}4$T $-16500-$

O$236\mathrm{.}2$T $-13500-$

Present your results as mass and heat balance tables.