Question

How does the value of an equilibrium constant relate to the relative quantities of reactants and products at equilibrium?

Answer 1

Let us consider a reaction

aA + bB  ⇄ cC + dD

The equilibrium constant for any reaction is given by the ratio of concentration of products raised to its coefficient in a balanced chemical equation. So, Kc can be given by

$Kc=\frac{[C]^{c}*[D]^{d}  }{[A]^{a}*[B]^{b}  }$

where, [A] is the concentration of the species which can be expressed as mol/$dm^{3}$ or molarity

This is how the relative quantities relates to equilibrium constant in equilibrium

Answer 2

Hi,

thanks for the question.

Answer: The equilibrium constant K is directly proportional to the concentration of products of reaction and inversely proportional to the concentration of reactants of reaction.