Calculate the reaction quotient Q.
The reaction quotient for Reaction Q is computed exactly like Keq but at the current concentrations, so comparing Q with Keq shows which direction the reaction must move. Comparing Q and Keq predicts the direction of change without any kinetics.
Reaction Q
Q = [products] / [reactants]; compare Q with Keq
Q = [products] / [reactants]; compare Q with Keq The reaction quotient for Reaction Q is computed exactly like Keq but at the current concentrations, so comparing Q with Keq shows which direction the reaction must move.
Comparing Q and Keq predicts the direction of change without any kinetics.
This calculator takes 3 inputs: Product concentration, Reactant concentration, Equilibrium constant. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.