Chemistry - Chemical Equilibrium Question with Solution | TestHub

$\mathrm{A }+ 2\mathrm{B }\underset{ }{\rightleftharpoons }\mathrm{ 2}\text{C} + \text{D}$
Initial conc. of$\text{[A] = a , [B] = 1.5a , [C] = 0 and [D] = 0}$

At equilibrium$\text{[A] = (a - x) , [B] = 1.5(a - 2x) , [C] = 2x and [D] = x}$

At equilibrium$a-x=1.5a-2x$

$0.5a=x$

$a=2x$

$k_C=\frac{{\left(2x\right)}^2\left(x\right)}{\left(a-x\right){\left(1.5a-2x\right)}^2}=\frac{4x^2.x}{\left(x\right){\left(x\right)}^2}=4$