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7. Alcohol, phenol and ethers — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry7. Alcohol, phenol and ethers1 Mark
MCQ
The boiling point of alcohol are …. than corresponding thiols
  • ✓
    More
  • B
    Same
  • C
    Either of these
  • D
    Less
✓

Answer

Correct option: A.
More
a
In alcohol, hydrogen bonding is present between oxygen and a hydrogen atom. Sulfur is less electronegative than oxygen and hence, forms a weaker hydrogen bond than in alcohol.

Stronger the hydrogen bonding, higher is the boiling point. Hence, the boiling point of alcohol is more than the corresponding thiol.

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