Question

If the reaction: $aA+bB\rightleftharpoons cC+dD$ is at equilibrium then which of the following statement is incorrect?

• A. Equilibrium constant $K_c=\frac{K_f}{K_b}$
• B. $\Delta G=0$
• C. $K_c=\frac{K_b}{K_f}$
• D. $\Delta H=T\Delta S$

Answer 1

The correct option is C $K_c=\frac{K_b}{K_f}$

As we know,
At $eq.\Delta G=0\therefore \Delta H=T\Delta S$

and $\frac{K_f}{K_b}=K_c=\frac{\left[C{]}^c\right[D{]}^d}{\left[A{]}^a\right[B{]}^b}$