The reaction A ( g ) ⇌ B ( g )+ C ( g ) was initiated with the amount ' a ' of A ( g ). At equilibrium it is found that the amount of A ( g )…

The reaction $\displaystyle \mathrm{A}(\mathrm{g}) \rightleftharpoons \mathrm{B}(\mathrm{g})+\mathrm{C}(\mathrm{g})$ was initiated with the amount ' a ' of $\displaystyle \mathrm{A}(\mathrm{g})$. At equilibrium it is found that the amount of $\displaystyle \mathrm{A}(\mathrm{g})$ remaining is $\displaystyle (\mathrm{a}-x)$ at a total pressure of p . The equilibrium constant Kp of the reaction can be calculated from the expression :