Hydrogen bonding is responsible for all of the following EXCEPT
Correct answer: D. the electrical conductivity of molten sodium chloride
- A. the high boiling point of ammonia compared with phosphine
- B. the solubility of ethanol in water
- C. the low density of ice compared with water
- D. the electrical conductivity of molten sodium chloride
Explanation
Molten sodium chloride conducts because it is an ionic compound whose ions become mobile when the lattice melts, and there is no hydrogen in the compound at all. The other three are classic consequences of hydrogen bonding: raised boiling points, mutual solubility with water and the open lattice of ice. Recognising when a substance simply cannot hydrogen bond is the quickest route to the answer.
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About Hydrogen Bonding
Hydrogen bonding is the strong attraction between hydrogen attached to nitrogen, oxygen or fluorine and an electronegative atom in the same or another molecule. It explains unusual boiling points, viscosity, surface tension, water's properties and the difference between intermolecular and intramolecular hydrogen bonding.
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