JAMB Chemistry 2021 Objective — Question 27
Question 27 of 41 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2021 Objective paper, with the correct answer and a full explanation.
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The number of hydroxonium ions produced by one molecule of an acid is its basicity. The respective basicities of H₂SO₄, HNO₃, HCl and H₃PO₄ are
- A. 2, 1, 1 & 1
- B. 2, 1, 1 & 3Correct
- C. 1, 1, 1 & 3
- D. 2, 1, 2 & 3
Explanation
H₂SO₄ = 2 (diprotic), HNO₃ = 1 (monoprotic), HCl = 1 (monoprotic), H₃PO₄ = 3 (triprotic). Basicities = 2, 1, 1, 3.
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