Q1 / 155 · WBJEE 2023 · Chemistry

The correct order of boiling points of N-ethylethanamine (I), ethoxyethane (II) and butan-2-ol (III) is

  • A
    III \( < \) II \( < \) I
  • B
    II \( < \) III \( < \) I
  • Correct answer
    C
    II \( < \) I \( < \) III
  • D
    III \( < \) I \( < \) II

Solution

Hint : Butan-2-ol shows stronger H-bonding than N-ethylenthanamine. Ethoxyethane involves dipole association, weaker than \(\mathrm{H}\)-bonding

Hence, the correct answer is option: 'C'.

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