If A + B ⇔ C + D KC = 10
then for C + D ⇔ A + B KC = 10-1
2. If we multiply each of the coefficient in a balanced equation by a factor n,then equilibrium constant is raised to the same factor.
- ½ N2 + ½O2 ⇔ NO KC = 5
N2 + O2 ⇔ 2NO KC = 52 = 25
SO2 + 1/2 O2 ⇔ SO3B KC = (25)1/2
4. When we combine individual equation, we have to multiply their equilibrium constant for net reaction.
If K1 , K2 and K3 are stepwise equilibrium constant for A⇔B , B⇔C , C⇔D .
Then for A⇔D , the equilibrium constant is K= K1K2K3
Significance of the magnitude of equilibrium constant:
If a large value of KP or KC signifies that the forward reaction goes to completion or very nearly so.
A large value of KP or KC signifies that the forward reaction doesn’t occur to any significant extent.
A reaction is most likely to reach a state of equilibrium in which both reactant and product are present if the numerical value of KP or KC is neither very large nor very small