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Chemical Bonding and Molecular Structure question

2009 · Q113
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Chemical Bonding and Molecular Structure question

2009 · Q113

NEETChemistryChemical Bonding and Molecular StructureMCQ+4 / −1
What is the dominant intermolecular force or bond that must be overcome in converting liquid CH3OH to a gas?
  1. A
    Dipole-dipole interaction
  2. B
    Covalent bonds
  3. C
    London dispersion force
  4. D
    Hydrogen bonding
View written solutionFree

Correct answer: D

Methanol can undergo intermolecular association through H-bonding as the - OH group in alcoholos is highly polarised.

−−−O∣CH3—H−−−O∣CH3—H−−−O∣CH3—H−−−- - - \mathop O\limits^{\mathop |\limits^{C{H_3}} } \hbox{---}H - - - \mathop O\limits^{\mathop |\limits^{C{H_3}} } \hbox{---}H - - - \mathop O\limits^{\mathop |\limits^{C{H_3}} } \hbox{---}H - - -−−−O∣CH3​​​—H−−−O∣CH3​​​—H−−−O∣CH3​​​—H−−−

As a result the order to convert liquid CH3OH to gaseous state, the strong hydrogen bonds must be broken.

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