For the overall reaction A + 2 B ? C which of the following mechanisms yields th

Question

For the overall reaction         A + 2 B ? C

which of the following mechanisms yields the correct overall chemical equation and is consistent with the rate equation below?

        rate = k[A][B]2

Question 4 options:

2 B ? I        (slow)

A + I ? C        (fast)

A + B ? I       (slow)

I + B ? C        (fast)

I + B ? C + A         (slow)

A + 2 B ? I             (fast)

I + B ? C + B        (slow)

I + A ? C        (slow)

1)

2 B ? I        (slow)

A + I ? C        (fast)

2)

A + B ? I       (slow)

I + B ? C        (fast)

3)

2 A + B   I          (fast)

I + B ? C + A         (slow)

4)

A + 2 B ? I             (fast)

I + B ? C + B        (slow)

5)

2 B   I          (fast)

I + A ? C        (slow)

Explanation / Answer

5

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