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13 April, 14:55

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.

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  1. 13 April, 15:08
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    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
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