Which of the following is responsible for the abnormally high boiling point of water?
A
Covalent bonding
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B
Hydrogen bonding
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C
High polarity
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D
Large dielectric constant
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E
Low molecular weight
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Solution
The correct option is D Hydrogen bonding
Water has a high boiling point because its molecules are bound together by hydrogen bonding, which is a very strong intermolecular force. It takes more kinetic energy, or a higher temperature, to break the hydrogen bonding between water molecules, thus allowing them to escape as steam.