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van 't Hoff Equilibrium Constant Calculator

New equilibrium constant K₂ at temperature T₂.

Use the van 't Hoff equation to predict the equilibrium constant K₂ at a new temperature T₂ given K₁ at T₁ and the standard enthalpy change ΔH° (J/mol).

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

Inputs

K
K
J/mol

Results

Enter values and click Calculate to see results.
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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

ln(K₂ / K₁) = − ΔH° / R · (1/T₂ − 1/T₁), R = 8.314 J/(mol·K).

In depth

Use the van 't Hoff equation to predict the equilibrium constant K₂ at a new temperature T₂ given K₁ at T₁ and the standard enthalpy change ΔH° (J/mol).