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Weighed salts Y and Z were left exposed in the laboratory overnight. In the morning...

Chemistry
JAMB 1979

Weighed salts Y and Z were left exposed in the laboratory overnight. In the morning Y had gained weight, and Z had become liquid. What conclusion could be drawn about the nature of the two salts?

  • A. Z is efflorescent
  • B. Y and Z are efflorescent
  • C. Y and Z are deliquescent
  • D. Y and Z are hygroscopic
  • E. Y is deliquescent
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Correct Answer: Option D
Explanation

A deliquescent compound is a compound that, on exposure to the atmosphere, tends to absorb moisture from the atmosphere in large quantities. Hence, Y and Z are hygroscopic. Deliquescent materials are sufficiently hygroscopic and dissolve in the water they absorb, forming an aqueous solution.


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