A mixture of fuels containing ethane and methane enter the reactor at $25C$ and $1$atm is

burned with excess air. For this process, air enters the reactor at $200C$ and $1$atm. A stack

gas generated from the combustion reaction leaves the reactor at $800C$ and $1$ atm. The stack

gas contains $5\mathrm{.}32$ mole $\%C{O}_2,1\mathrm{.}6$ mole $\%CO,7\mathrm{.}32$ mole $\%O_2,12\mathrm{.}24$mole$\%H_{2}O$ and the

balance is $N_2.$

$($a$)$ Write the possible stoichiometry reaction for this process.

$[2$ Marks$]$

$($b$)$ Draw and label a flowchart of this process.

$[2$ Marks$]$

$($c$)$ Taking $100$mol of stack gas as basis, calculate the molar flowrates of methane and ethane

in fuel gas.

$[16$ Marks$]$

$($d$)$ Determine the heat $(kJ)$ transferred to the reactor.

$[20$ Marks$]$