Question 27
HydrocarbonsWhich of the following will decolourized the purple colour of tetraoxomanganate (vii) ion?
- A.alkanols
- B.alkenes
- C.alkanes
- D.alkanals
Show the answer and explanation
Answer: B (alkenes)
Explanation
Alkenes have a C=C double bond that is oxidised by acidified KMnO4, removing its purple colour.