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Calculate the concentrations for all components of the following reaction at equilibrium: PCl3 + Cl2 ⇄...

Calculate the concentrations for all components of the following reaction at equilibrium:

PCl3 + Cl2 ⇄ PCl5

Equilibrium constant K=16

Initial concentration PCl5 = 0.5 M

Solutions

Expert Solution

ICE Chart

                     PCl3  +  Cl2 <====> PCl5

initial                0          0                   0.5

change            +x        +x                   -x

equilibrium        x          x                 0.5-x

-----------------------------------------------------------------------

K = [PCl5]/[PCl3][Cl2]

16 = (0.5-x)/x^2

16x^2 + x - 0.5 = 0

x = 0.15 M

thus, the equilibrium concentration of,

[PCl3] = [Cl2] = 0.15 M

[PCl5] = 0.5 - 0.15 = 0.35 M

queen_honey_blossom answered 7 months ago
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