Question

Shown below is a concentration vs. time plot for the reaction 2A ⇌ B. What is the value for the equilibrium constant for this reaction?

0.100 0.080 0.060 B 0.040 Concentration (M) A 0.020 0.000 0.00 1.00 2.00 3.00 4.00 5.00 Time (min)

Answer 1

For any reaction at equilibrium:

aA ⇌bB

K_{​​​​​C} = [A]^a / [B]^b.

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from the given graph: at Egm. [A] = 0.02 moll, [B] = 0.05 mol/L 0.05 1) 125 morte 2 [B] [A]² (0.02)