Question
Chemistry Question on Surface Chemistry
When a catalyst is added to a system, the:
A
value of equilibrium constant is decreased
B
the rate of forward reaction is increased and of backward reaction is decreased
C
equilibrium concentrations are unchanged
D
equilibrium concentrations are increased
Answer
equilibrium concentrations are unchanged
Explanation
Solution
A catalyst increase the rate of both forward and backward reactions equally and thus brings about the equilibrium state early but does not change the concentration at equilibrium i.e., equilibrium constant is unchanged.