Question

Phosgene is a potent chemical warfare agent that is now outlawed by international agreement. It decomposes by the reaction:

                  COCl₂(g) ⇌ CO(g) + Cl₂(g)                K_c = 8.3 ´ 10^‒4 (at 360 ^oC)

Initially, there is 0.50 M COCl₂ in the flask, what are equilibrium concentrations of COCl₂, CO, and Cl₂?

A) [COCl₂] = 0.42 M, [CO] = 0.08 M, [Cl₂] = 0.08 M

B) [COCl₂] = 0.37 M, [CO] = 0.13 M, [Cl₂] = 0.02 M

C) [COCl₂] = 0.50 M, [CO] = 0.02 M, [Cl₂] = 0.02 M

D) [COCl₂] = 0.48 M, [CO] = 0.02 M, [Cl₂] = 0.02 M

I know it has been solved previously, but I need detailed algebraic work done after the ICE table is filled out. I'm halfway there and cannot figure it out because of simple math errors.

Answer 1