Question

(a) What would be observed on adding a 5% alkaline potassium permanganate drop by drop to some warm ethanol taken in a test-tube ? (b) Write the name of the compound formed during the chemical reaction.

Answer 1

a. The purple colour of potassium permagnate will disappear and acetic acid will ce formed

b. Acetic acid CH3COOH + H2O

Answer 2

a). The purple color of potassium permanganate will disappear due to oxidation of ethanol . Formation of carboxylic acid is taking place in that case.

b). Acetic acid is formed when potassium permanganate is mixed to warm ethanol . Ethanol is oxidised to Acetic acid .

• Potassium permanganate acts as an oxidising agent .