A hypothetical reaction: A_(g) + B_(g) ⇌ C_(g) + D_(g) occurs in a single step, the specific rate constant of forwar

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Q 1148112903.     A hypothetical reaction: A_(g) + B_(g) ⇌ C_(g) + D_(g) occurs in a single step, the specific rate constant of forward reaction at TK is 2.0 × 10^-3 mol^-1 L s^-1. When start is made with equimolar amounts of A and B, it is found that the concentration of A is twice that of C at equilibrium. Find the specific rate constant of the backward reaction.
A

3.0 × 10^-3 mol^-1 Ls^-1

B

5.0 × 10^-4 mol^-1 Ls^-1

C

2.5 × 10^2 mol^-1 Ls^-1

D

8.0 × 10^-3 mol^-1 Ls^-1

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