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JAMB Chemistry 1998 Question 20

Question 20

Electrolysis

In the conductance of aqueous potassium tetraoxosulphate (VI) solution, the current carriers are the

  1. A.ions
  2. B.electrons
  3. C.hydrated ions
  4. D.hydrated electrons
Show the answer and explanation

Answer: C (hydrated ions)

Explanation

In a solution, electricity is carried by moving ions, not electrons. In water each K+ and SO42− ion is surrounded by water molecules, so the carriers are hydrated ions.