basic

Reaction Quotient Q vs K Calculator

Compare Q to K to predict reaction direction.

Compare the reaction quotient Q (computed from current concentrations) to the equilibrium constant K and predict the direction the reaction will shift to reach equilibrium.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Q < K → forward; Q > K → reverse; Q = K → at equilibrium.

In depth

Compare the reaction quotient Q (computed from current concentrations) to the equilibrium constant K and predict the direction the reaction will shift to reach equilibrium.