Question

Which of the following is a characteristic of an equilibrium constant?

• A. If the reaction is reversed, the value of equilibrium constant is inversed
• B. If the stoichiometric coefficients of reaction having equilibrium constant 'K' is divided by 2, the value of equilibrium constant becomes square root of 'K'
• C. If the stoichiometric coefficients of reaction having equilibrium constant 'K' is multiplied by 2, the value of equilibrium constant becomes square of 'K'
• D. All of the above.

Answer 1

The correct option is D All of the above.

a) $A\rightleftharpoons B{K}_c=\frac{\left[B\right]}{\left[A\right]}$
$B\rightleftharpoons A{K}_c^{{}^{\prime }}=\frac{\left[A\right]}{\left[B\right]}=\frac{1}{K_c}$
b) $A\rightleftharpoons B{K}_c=\frac{\left[B\right]}{\left[A\right]}$
$\frac{1}{2}A\rightleftharpoons \frac{1}{2}B{K}_c^{{}^{\prime }}={\sqrt{K}}_c$
c) $A\rightleftharpoons B{K}_c=\frac{\left[B\right]}{\left[A\right]}$
$2A\rightleftharpoons 2B{K}_c^{{}^{\prime }}=K_c^2$
hence all options are correct