ethene and chlorine react together to form dichloroethane via main reaction. However some of the ethene and chlroine also react to form trichloroethane via a side reaction. The feed to the reactor contains $1\mathrm{.}25$ kmol of C$2$H$4$ per kmol of cl$2.$ the overall conversion of chlorine is $100\%$ and the selectivity of C$2$H$4$Cl$2$ over C$2$H$3$Cl$3$ is $8.$ a$)$what is the fractional conversion of chlorine via reaction $1$ and reaction $2$

b$)$ calculate the mole fractions of all the components in the reactor