Bromate, bromide and hydrogen ions react in the equation shown. $\text{BrO}_3^-(aq) + 5\text{Br}^-(aq) + 6\text{H}^+(aq) \rightarrow 3\text{Br}_2(aq) + 3\text{H}_2\text{O}(l)$. A piece of apparatus for finding out how the rate of this reaction changes with time is suggested. Which apparatus is suitable to measure the rate of this reaction?
- A1 and 2
- B1 only
- C2 and 3
- D3 only