Question
Asked Nov 20, 2019
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At 298 K, the equilibrium constant for the below reaction is 4.17 x 103. What is the concentration of Cl at
equilibrium?
6.
Pb2+ (aq)2 cl- (aq) = PbCl2 (s)
(а) 20.2 М
(с) 10.1 М
(b) 0.078 M
(d) 0.039 M
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At 298 K, the equilibrium constant for the below reaction is 4.17 x 103. What is the concentration of Cl at equilibrium? 6. Pb2+ (aq)2 cl- (aq) = PbCl2 (s) (а) 20.2 М (с) 10.1 М (b) 0.078 M (d) 0.039 M

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Expert Answer

Step 1

The concentration of Cl- can be calculated as,

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[РЬсlz] K = [Pb2+1[Cl-12 Ph2+ (aq)2 Cl" (aq) = PbCl2 (s) Concentration 2х X

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Step 2

The concentration of Pb2+ and Cl- at equilibrium will be x and 2x. Since PbCl2 is a solid, its concentrat...

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1 К- x][2x]2 1 4x3 4.17 х 103 x 0.039 M Since the concentration of Cl 2x, therefore, [Cl 2 x 0.039 = 0.078 M

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ScienceChemistry

Equilibrium Concepts

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