Kp Calculator: Calculate Equilibrium Constant from Partial Pressures

Kp Equilibrium Constant Calculator

Partial Pressure of Reactant A (P_A)

Stoichiometric Coefficient of Reactant A (a)

Partial Pressure of Reactant B (P_B) (Enter 1 if only one reactant)

Stoichiometric Coefficient of Reactant B (b) (Enter 0 if only one reactant)

Partial Pressure of Product C (P_C)

Stoichiometric Coefficient of Product C (c)

Partial Pressure of Product D (P_D) (Enter 1 if only one product)

Stoichiometric Coefficient of Product D (d) (Enter 0 if only one product)

Our Kp Calculator simplifies the process of finding the equilibrium constant Kp for gas-phase reactions. Enter partial pressures and stoichiometric coefficients to quickly solve for Kp. Understand the relationship between Kp and reaction equilibrium.

Formula:

Kp =

^{(P_C^c × P_D^d)}⁄_{(P_A^a × P_B^b)}

Where:

P_A, P_B = Partial pressures of Reactants A and B (e.g., in atm, bar, kPa)
a, b = Stoichiometric coefficients of Reactants A and B
P_C, P_D = Partial pressures of Products C and D
c, d = Stoichiometric coefficients of Products C and D

This formula applies to a general gaseous reaction: aA(g) + bB(g) ↔ cC(g) + dD(g).

Science and Chemistry Tools

Kp Calculator: Calculate Equilibrium Constant from Partial Pressures

Kp Equilibrium Constant Calculator

Results

Formula:

Science and Chemistry Tools

Amount of Substance (Moles)

Anion Transport Number

Atomic Absorption Spectroscopy (AAS) Concentration

Average Atomic Mass : Determine Isotopic Averages Precisely

Avogadro Number

Avogadro's Number