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R_f value for 2 -methylpropene in a solvent system (Ethyl acetate + ether) is 0.42 . 2 -methylpropene is treated with dilute H ₂ SO ₄ to give major organic product (X). R_f value for (X) in the same solvent system under identical condition will be:

Options

  1. A0.42
  2. B0.82
  3. C0.62
  4. D0.12

Correct answer

D. 0.12

Step-by-step solution

2 -methylpropene reacts with dilute H₂SO₄ to undergo hydration, forming tert-butyl alcohol as the major product (X). The reaction is: CH₂=C(CH₃)₂ dil. H₂SO₄ (CH₃)₃C-OH Product (X) is an alcohol, which is significantly more polar than the starting alkene due to the presence of the -OH group. In normal phase chromatography, the stationary phase (such as silica gel) is highly polar. The polar -OH group forms strong hydrogen bonds with the stationary phase, causing the alcohol to be adsorbed more strongly than the non-

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