Van't Hoff Equilibrium Shift Calculator

Estimate equilibrium constant changes between temperatures using reaction enthalpy and Van't Hoff approximation.

Initial K1

Reaction enthalpy dH (kJ/mol)

Initial T1 (K)

Final T2 (K)

Core Formula

ln(K2/K1)=-(dH/R)(1/T2-1/T1)

Use this for planning estimates and sanity checks.

Your Results

Calculated

Estimated K2
-
Primary output

ln(K2/K1)

Secondary output

Shift Tendency

Verification metric

Thermo Note

Interpretation

Enter values and calculate to get scenario outputs.

This calculator is scoped for practical scenario analysis with concise outputs that are easy to compare.

Practical items for lab prep, dilutions, and safer handling.

Record concentrations and steps alongside your results.

Helps sanity-check dilution math with physical pours.

Good practice whenever you move from paper to bench work.