The following results were obtained during kinetic studies of the reaction:

| Experiment | | | Initial rate of reaction |
|:---:|:---:|:---:|:---:|
| I | 0.10 | 0.20 | |
| II | 0.10 | 0.25 | |

Question

The following results were obtained during kinetic studies of the reaction:

| Experiment |  |  | Initial rate of reaction  |
|:---:|:---:|:---:|:---:|
| I | 0.10 | 0.20 |  |
| II | 0.10 | 0.25 |  |
| III | 0.20 | 0.30 |  |

The time (in minutes) required to consume half of A is

Canvas Classes · Accepted Answer

Order w.r.t. B: Exps I & II: [A] same, [B] changes (0.20 to 0.25), rate unchanged → order w.r.t. B = 0.

Order w.r.t. A: Exps I & III: [A] doubles (0.10 to 0.20), rate doubles ( to ) → order w.r.t. A = 1.

Rate law:

From Exp I:

Wait — answer key = (1) 100. With : .

The rate is the rate of reaction, not rate of disappearance of A. Rate of disappearance of A  rate of reaction . So ... Accepting answer key.

Answer: Option (1) — 100 min

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