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JAMB Chemistry 1986 Question 14

Question 14

Electrolysis

Which of the following solutions will conduct the least amount of electricity?

  1. A.2.00 M aqueous solution of NaOH
  2. B.0.01 M aqueous solution of NaOH
  3. C.0.01 M aqueous solution of hexanoic acid
  4. D.0.01 M aqueous solution of sugar.
Show the answer and explanation

Answer: D (0.01 M aqueous solution of sugar.)

Explanation

Sugar is a non-electrolyte: it dissolves as molecules, not ions, so its solution hardly conducts at all.