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NEET levelSingle correct optionDifficulty 1 of 3o3006

The SN1 solvolysis of is fastest in which of these solvents?

  1. Amethanol
  2. Bethanol
  3. Chexane
  4. Dwater

Answer: D

The transition state of the ionisation step has developing charge separation, which is stabilised by polar, hydrogen-bonding (ionising) solvents. Water has the highest polarity and best anion solvation of the four, whereas hexane cannot stabilise ions at all.
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