WAEC Chemistry 2010 Theory — Question 18

Question 18 of 46 from the West African Examinations Council (WAEC) Chemistry 2010 Theory paper, with the correct answer and a full explanation.

3a(iii) Identify each of the following substances in aqueous solutions as strong electrolyte, non-electrolyte, or weak electrolyte: C12H22O11(aq); NaOH(aq); NH3(aq).

Model answer

C12H22O11(aq) (sucrose) => Non-electrolyte. NH3(aq) => Weak electrolyte. NaOH(aq) => Strong electrolyte.

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