JAMB Chemistry 2021 Objective — Question 3
Question 3 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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What is the pH of a 0.001 mol dm⁻³ solution of sodium hydroxide?
- A. 11Correct
- B. 14
- C. 3
- D. 2
Explanation
NaOH → Na⁺ + OH⁻. [OH⁻] = 0.001 = 10⁻³ M. pOH = 3. pH = 14 − pOH = 14 − 3 = 11.
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