$3.$ The equation for one of the methods for preparing hydrogen cyanide is N$($g$)+$ CH$($g$)2$HCN$($g$).$ At $300$ C$,$ AG for the reaction is $7190$ cal. Estimate the product composition at $200$ bar. The feed to the reactor contains N$($g$)$ and H$2($g$)$ in stoichiometric proportion.