How is the reaction quotient used to determine whether a system is at equilibrium?

Question

The reaction is at equilibrium when Q > Keq.

At equilibrium, the reaction quotient is undefined.

The reaction quotient must be satisfied for equilibrium to be achieved.

The reaction is at equilibrium when Q < Keq.

The reaction is at equilibrium when Q = Keq.

I think the answer is when reaction is at equllibrium when they = each other

Answer 1

You are right.