Same chapter3 marksDifficulty: Medium
What is the Wurtz reaction, and state its main limitation.
Hydrocarbons
3 marksDifficulty: Medium
State Markownikoff's rule and apply it to the addition of hydrogen bromide to propene.
Original Khojo Papers practice question — not from a past board paper.
Answer
When an unsymmetrical reagent adds to an unsymmetrical alkene, the negative part of the reagent attaches itself to the carbon atom carrying the smaller number of hydrogen atoms. Hydrogen bromide therefore adds to propene to give 2-bromopropane as the main product.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
In the presence of peroxides the addition is anti-Markownikoff and gives 1-bromopropane.
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