Question

A hydrocarbon C₃H₆ (A) reacts with HBr to form compound (B). Compound (B) reacts with aqueous potassium hydroxide to give (C) of molecular formula C₃H₆O. What are (A) (B) and (C). Explain the reactions?

Answer 1

1. The hydrocarbon with molecular formula C₃H₆ 

(A) is identified as propene, CH – CH = CH₂ 

2. Propene reacts with HBr to form bromopropane 

CH₃ – CH₂ – CH₂ Br as (B).

3. 1 – bromopropane react with aqueous potassium hydroxide to give 1 – propanol CH₃ – CH₂ – CH₂ OH as (C). 

4. 2 – bromo propane reacts with aqueous KOH to give 2-propanol as (C)