# A mixture of ethane $(C_2H_6)$ and ethene $(C_2H_4)$ occupies 40 litre at 1.00atm and at 400k.The mixture reacts completely with 130g of $O_2$ to produce $CO_2$ and $H_2O$.Assuming ideal gas behavior ,Calculate the mole fractions of $C_2H_4$ and $C_2H_6$ in the mixture.
$\begin{array}{1 1}(a)\;1.2,3.2&(b)\;0.66,0.34\\(c)\;0.1,0.2&(d)\;2.2,3.1\end{array}$