While the gas was bubbling into the solution in F2, the following change took place:
KMnO4(aq) → MnO2(s)
Purple Orange/brown
i. Explain what type of reaction this is.
ii. Use the partial equation above to describe why the solution in F2 appeared to change when left for 5 minutes after the reaction was complete.
iii. If a bromine solution was used, write down a balanced chemical equation to show the reaction occurring in well F2. Why was a colour change observed?