COMEDK · Chemistry · 14. Hydrocarbons
\(\text { Identify }[\mathrm{B}] \text { and }[\mathrm{C}] \text { formed in the reactions given below. }\)
- A [B] Propene [C] Propanal
- B [B] Propane [C] Ethanol
- C [B] Cyclopropane [C] Ethanal
- D [B] Propyne [C] Propanone
Answer & Solution
Correct Answer
(D) [B] Propyne [C] Propanone
Step-by-step Solution
Detailed explanation
The starting material is \(C_{3}H_{4}Br_{4}\). This is a tetrabromo derivative of propane. Reaction with Zn dust (dehalogenation) leads to the formation of an alkyne. Specifically, \(CH_{3}-CBr_{2}-CHBr_{2}\) or \(CH_{2}Br-CHBr-CH_{2}Br\) (though the formula \(C_{3}H_{4}Br_{4}\)…
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