(a) $\alpha = \sqrt{\frac{K_{eq}}{(x+y)}}$
(b) $\alpha = (\frac{K_{eq}}{C^{x+y-1} X^x Y^y})^{\frac{1}{x + y}}$
(c) $\alpha = \frac{k_{eq}}{C^{xy}}$
(d) $\alpha = \sqrt{\frac{K_{eq} C}{x \times y}}$