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MHT CET Medical202622 April 2026Evening ShiftChemistryHaloalkanes and HaloarenesActual

What is the main product obtained when sodium ethoxide reacts with isopropyl chloride?

Options

  1. AC ₂ H ₅ -O-CH-(CH ₃)₂
  2. BCH ₃ -CH=CH ₂
  3. CC ₂ H ₅ -O-C ₂ H ₅
  4. D( CH ₃)₂ -CH-O-CH-(CH ₃)₂

Correct answer

B. CH ₃ -CH=CH ₂

Step-by-step solution

Sodium ethoxide ( C ₂ H ₅ O ^- Na ^+ ) acts as both a strong base and a strong nucleophile. Isopropyl chloride ( CH ₃ -CHCl-CH ₃ ) is a secondary alkyl halide. When a secondary alkyl halide reacts with a strong base like sodium ethoxide, elimination (E2) competes with substitution (S_N 2). Due to the steric hindrance of the secondary alkyl halide and the strength of the base, dehydrohalogenation (elimination) dominates over substitution. Thus, the major product is an alkene (propene), while the substitution product

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