InterviewSolution
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InterviewSolution
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The rate constant for forward reaction `A(g) hArr 2B(g)` is `1.5 xx 10^(-3) s^(-1)` at `100 K`. If `10^(-5)` moles of `A` and `100 "moles"` of `B` are present in a `10-L` vessel at equilibrium, then the rate constant for the backward reaction at this temperature isA. `A. 1.50 xx 10^(-4) L mol s^(-1)`B. `B. 1.50 xx 10^(-11) L mol^(-1) s^(-1)`C. `C. 1.50 xx 10^(-10) L mol^(-1) s^(-1)`D. D. None of these |
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Answer» Correct Answer - B `k_(eq) = ([B]^(2))/([A]) = ([100//10]^(2))/([10^(-5)//10]) = 10^(8)` `k_(eq) = (k_(f))/(k_(b)) = rArr k_(b) = (1.5 xx 10^(-3))/(10^(8)) = 1.5 xx 10^(-11) L mol^(-1) s^(-1)` |
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