Kp Calculator

Convert Kc to Kp for gas-phase equilibria.

Kp 164.11

Formula: Kp = Kc · (RT)^Δn, R = 0.08206

Step-by-step with your numbers:

1. Values used:

2. Kc = 4

3. Temperature = 500 K

4. Δn (moles gas products − reactants) = 1

6. Kp = 164.11

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Relate the pressure equilibrium constant Kp to the concentration constant Kc.

The math behind it

Kp = Kc × (RT)^Δn, where Δn = moles of gaseous products − reactants, R = 0.08206 L·atm·mol⁻¹·K⁻¹.

Kc 4, 500 K, Δn 1 → Kp ≈ 164.

Δn = 0?

Then Kp = Kc.