Question

A reaction is given by aA + bB → cC + dD. How do you represent an equilibrium constant?

(a) [A]^a[B]^b/[C]^c[D]^d

(b) [C]^c[D]^d/[A]^a[B]^b

(c) [A][B]/[C][D]

(d) [C][D]/[A][B]

The question was asked by my school principal while I was bunking the class.

I would like to ask this question from Law of Chemical Equilibrium and Equilibrium Constant topic in chapter Equilibrium of Chemistry – Class 11

Answer 1

Correct option is (b) [C]^c[D]^d/[A]^a[B]^b

Explanation: An equilibrium constant in a chemical reaction As given by the ratio of Forward reaction rate by backward reaction rate its units are (mol/L)^Δng, where Δng is moles of products – moles of reactants which are in the gaseous state only.