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Rate of disappearance of Br^- = rate of appearance of Br2. -1/5 d[Br^-]/dt = 1/3 d[Br2]/dt

1. Rate of disappearance of Br^- = rate of appearance of Br2.
2. -1/5 d[Br^-]/dt = 1/3 d[Br2]/dt
3. 3/5 d[Br^-]/dt = d[Br2]/dt
4. 3 × 10^-4 mol L^-1 s^-1

Correct answer: 3/5 d[Br^-]/dt = d[Br2]/dt

Solution

The stoichiometric relationship between Br⁻ and Br₂ in the reaction determines the rate. The correct proportionality is 3/5 d[Br⁻]/dt = d[Br₂]/dt.

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