QUESTION $2$

A gas mixture containing $60\%$ methane $(C{H}_4)$ and $40\%$ propane $(C_3{H}_8)$ is burned in a furnace with $150\%$ excess air. The percentage conversion of methane combustion is $95\%,$ and $80\%$ of the burned methane forms $C{O}_2,$ with the rest forming CO $.$ Propane, when completely burned, forms only $C{O}_2.$

a$)$ Write TWO $(2)$ stochiometric balanced chemical equations for the above process.

$(2$ marks$)$

b$)$ Draw and label the flow diagram completely.

$(2$ marks$)$

c$)$ Calculate the flowrate of air feed, by assuming methane and propane theoretically are completely burned.

$(4$ marks$)$

d$)$ By using extent of reaction, calculate composition of exhaust gases.

$(9$ marks$)$