JAMB Chemistry 2012 Objective — Question 17
Question 17 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2012 Objective paper, with the correct answer and a full explanation.
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Which of the following will produce a solution with pH less than 7 at equivalent point?
- A. HNO3+ NaOH
- B. H2SO4+ KOH
- C. HCl+ Mg(OH)2Correct
- D. HNO3+ KOH
Explanation
HCl+Mg(OH)2 is a reaction between a strong acid and a weak base; at the equivalence point the resulting salt solution hydrolyses to give a pH less than 7 (acidic).
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