O-LevelChemistryRates of Reaction5070/12 · May/June 2022 · Q201 Mark
Bromate, bromide and hydrogen ions react according to the equation shown. BrO₃⁻(aq) + 5Br⁻(aq) + 6H⁺(aq) → 3Br₂(aq) + 3H₂O(l) Some apparatus for measuring how the rate of this reaction varies over time is suggested. 1 gas syringe 2 balance 3 pH meter Which apparatus is suitable to measure the rate of this reaction?
A1 and 2
B1 only
C2 and 3
D3 only
✓ Correct answer
D: 3 only
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