WAEC Chemistry 2023 Objective — Question 30

Question 30 of 50 from the West African Examinations Council (WAEC) Chemistry 2023 Objective paper, with the correct answer and a full explanation.

Which of the following equimolar solutions has the highest conductivity?

A. H2CO3(aq)
B. H2SO4(aq)Correct
C. NaOH(aq)
D. CH3COONa(aq)

Explanation

H2SO4 is a strong acid that fully dissociates, giving it the highest conductivity. H2CO3 has the lowest conductivity since it is a weak acid that only dissociates slightly.

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