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