Question

alkenes react with alkaline KMnO4 and yield....?
​

Answer 1

Explanation:

Alkenes react with potassium manganate(VII) solution in the cold. ... If the potassium manganate(VII) solution is made slightly alkaline (often by adding sodium carbonate solution), the purple solution first becomes dark green and then produces a dark brown precipitate.

Answer 2

Answer:

When a purple solution of the oxidizing agent KMnO4 is added to an alkene, the alkene is oxidized to a diol and the KMnO4 is converted to brown MnO2. Thus, the purple color changes to brown in this reaction.