The equilibrium constant K c for the reaction below is 6.4910 6 at 186°C. COCl 2

Question

The equilibrium constant Kc for the reaction below is 6.49106 at 186°C.

COCl2 at an initial concentration of 6.62102M is placed into an empty reaction vessel at 186°C and allowed to equilibrate. The concentration of Cl2 measured after equilibration is 6.52104M. Create an I.C.E. table showing the initial concentrations, change in concentrations, and equilibrium concentrations of the reactants and products of this reaction.

COCl2(g) CO(g) + Cl2(g) [COCl2] [CO] [Cl2] ---Select--- Initial concentration Change in concentration Equilibrium concentration   M   M   M ---Select--- Initial concentration Change in concentration Equilibrium concentration   M   M   M ---Select--- Initial concentration Change in concentration Equilibrium concentration   M   M   M

Explanation / Answer

Answer:

A balanced equation and ICE table,

COCl2 <---------> CO + Cl2

Initial (6.62 x 10-2 M) 0 0

Change -(6.52 x 10-4 M) +(6.52 x 10-4 M) (6.52 x 10-4 M)

At Equilibrium 6.55 x 10-2 M (6.52 x 10-4 M) (6.52 x 10-4 M)

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