Question

In the permanganate test, the presence of an alkene group is indicated by

a) A decrease in solution color
b) Formation of a white precipitate
c) A sudden increase in temperature
d) A pink or purple color change

Answer 1

In the permanganate test, the presence of an alkene group is indicated by a pink or purple color change.

Step-by-step explanation:

In the permanganate test, the presence of an alkene group is indicated by a pink or purple color change. Permanganate ions (MnO4-) are strong oxidizing agents, and they can react with alkenes to form diols.

This reaction results in the reduction of permanganate ions and a color change in the solution to pink or purple.