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JAMB Chemistry 1988 Question 21

Question 21

Acids, Bases and Salts

Which of the following substances is a basic salt?

  1. A.Na2CO3
  2. B.Mg(OH)Cl
  3. C.NaHCO3
  4. D.K2SO4.Al2(SO4)3.24H2O
Show the answer and explanation

Answer: B (Mg(OH)Cl)

Explanation

A basic salt still contains hydroxide ions from the base, as in Mg(OH)Cl. NaHCO3 is an acid salt, Na2CO3 a normal salt and alum a double salt.