Problem: Phosgene, COCl2, a poisonous gas, decomposes according to the equationCOCl2(g) ⇌ CO(g) + Cl2(g)Calculate Kp for this reaction if Kc = 0.083 at 900ºC.A)  0.125B)  8.0            C)  6.1            D)  0.16          E)  0.083

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FREE Expert Solution

We are being asked to calculate K_p for the decomposition of phosgene (CoCl₂) where its K_c is given.

COCl_2(g) ⇌ CO_(g) + Cl_2(g)

When dealing with equilibrium:

• K_c → equilibrium units are in molarity 
• K_p → equilibrium units in terms of pressure

Kp and Kc are related to one another by the following equation below: 

$\boxed{{\mathbf{K}}_{\mathbf{p}}\mathbf{=}{\mathbf{K}}_{\mathbf{c}}{\left(\mathbf{RT}\right)}^{\mathbf{∆}\mathbf{n}}}$