Phosgene is formed from carbon monoxide and chlorine. At 611 oC, Kc is approximately 16.5 M-1 or L/mol. Calculate Kp (in atm-1) at this temperature.

Kp is 0.228/atm

Explanation:

This is the reaction:

CO + Cl₂ → CCl₂O

1 mol of carbon monoxide and 1 mol of chlorine produce 1 mol of phosgene.

Formula for Kp which derivates from Kc is:

Kp = Kc (R. T) ⁿᵇ ⁻ ⁿᵃ

Δп = nb (moles in the products) - nₐ (moles in the reactants)

Δп = 1 - 2 = - 1

T is T° in K → T°C + 273 = 611°C + 273 = 884K

R → Universal constant gas → 0.082 L. atm/mol. K

We replace the dа ta: Kp = 16.5 L/mol (0.082. 884K) ⁻¹ → 0.228/atm