Calculate K or Q from a product term divided by a reactant term.
| K or Q | – |
Use this calculator when the ICE table is done and you have the multiplied concentrations (or pressures) on each side.
K (or Q) = products ÷ reactants. Type the already-powered, already-multiplied terms, for example (0.10)² in the product box if the law has [C]². Units follow whatever you put in. The reactant term must be greater than zero.
This is a single ratio. It does not expand a full mass-action expression from a reaction equation.
Numerator (products): Numerator of K: concentrations or pressures already raised to their powers and multiplied.
Denominator (reactants): Denominator the same way. Cannot be zero.
K or Q: Equilibrium constant or reaction quotient from that ratio.
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