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JAMB Chemistry 1983 Question 22

Question 22

Water

Sodium sulphate decahydrate (Na2SO4.10 H2O) on exposure to air loses all its water of crystallization. The process of loss is known as

  1. A.efflorescence
  2. B.hygroscopy
  3. C.deliquescence
  4. D.effervescence
  5. E.dehydration
Show the answer and explanation

Answer: A (efflorescence)

Explanation

Losing water of crystallization to the atmosphere on standing is called efflorescence.