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The boiling point of water is higher than that of methanol because…

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CHEMISTRY

The boiling point of water is higher than that of methanol because

A. water is an oxide while methanol is an alcohol

B. inter-molecular forces in water are stronger than those in methanol

C. Water is an inorganic compound while methanol is organic

D. Water is a compound while methanol is a covalent compound

QUICK ANSWER…

B

DETAILS…  

Intermolecular forces holding atoms and molecules together is the chief cause of high or low boiling points.

Water manages to have a higher boiling point than methanol simply because the inter-molecular forces holding water molecules together are stronger than those holding methanol together.

Now for the right answer to the above question:

  1. Option A is incorrect. there are alcohols that have higher boiling points than water, so this option is untenable.
  2. Option B is correct. Yes, inter-molecular forces holding water together are stronger than those holding methanol together.
  3. C is incorrect. there are organic compounds that have a higher boiling point than inorganic compounds, so, this option is unreasonable.
  4. D is not the correct answer. Both are covalent.
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KEY-POINTS…

You may please note these/this:

  • Inter-molecular bonds holding compounds together are usually responsible for high or low boiling points.
  • The higher the bond strength, the higher the boiling point; and the lower the bond strength, the lower the boiling point.

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/ culled from 2016 JAMB-UTME Chemistry past question 33 /

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