In the fictious reaction below, the equilibrium conc. of A is .306M, B is .183M and...

Question

Question

In the fictious reaction below, the equilibrium conc. of A is .306M, B is .183M and A2B3 is .079M. What is the value of Kc for this reaction?

2 A (aq)+ 3 B (aq) at eq. with A2B3 (aq)

A. .709 B. 140 C. .00714 D. 1.41

Answer 1

Answer #1

K = [A2B3] / [A]^2 [B]^3

K = [0.079] / [0.306]^2 [0.183]^3

K = (0.079)/((0.306^2)(0.183^3)) = 137.6673

nearest is 140

Answer 2

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