Answer
(a) The reaction will proceed in forward direction.
(b)The reaction will proceed in backward direction.
(c)The reaction will proceed neither in forward nor in backward direction.
Work Step by Step
Equilibrium constant$(K)$ is the ratio of concentration of products with concentration of reactants raising stoichiometric coefficients to the power when the reaction is present at equilibrium.It has a constant value at constant temperature.
Reaction Quotient$(Q)$ is the ratio of concentration of products with concentration of reactants raising stoichiometric coefficients to the power at any moment during a reaction.
(a)
When $Q$$\lt$$K$ concentration of reactant is higher in denominator.Now as $K$ has constant value under constant temperature so the reaction will proceed in forward direction making concentration of product higher.
(b)
When $Q$$\gt$$K$ concentration of product is higher in numerator.Now as $K$ has constant value under constant temperature so the reaction will proceed in backward direction making concentration of reactant higher.
(c)
When $Q$=$K$ concentration of reactant and product are same and the reaction is present at equilibrium.No movement occurs until the temperature is changed.
