Use this chemistry calculator to reproduce a named relationship with explicit quantities and units for study, laboratory planning, or an independent numerical check.

Ammonia concentration (mol/L)

Required number input.

Hydrogen concentration (mol/L)

Required number input.

Nitrogen concentration (mol/L)

Required number input.

Calculate the concentration equilibrium constant for N2 + 3 H2 ⇌ 2 NH3. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Equilibrium constant ((mol/L)^-2)

The resulting equilibrium constant returned as a number.

• Equilibrium expressions must match the balanced reaction and selected standard state. Concentrations or partial pressures may not equal activities at non-ideal conditions, and a calculated equilibrium constant does not describe how quickly equilibrium is reached.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check units and significant figures, compare the result with limiting cases, and use measured or source-specific constants where available. Laboratory, safety, and regulatory decisions require validated methods and appropriate uncertainty analysis.

• Kc From Equilibrium Conc

  Compute the equilibrium constant Kc as equilibrium product concentration to power p over reactant concentration to power r.

• Freundlich Adsorption Capacity

  Calculate equilibrium adsorption capacity q=K C^(1/n) using the empirical Freundlich isotherm. The coefficient K carries units determined by the concentration and capacity units; this model has no saturation limit.

• Henry Constant From Solubility Calculator

  Derive Henry's law constant H = P / C from the partial pressure and dissolved gas concentration at equilibrium.