WAEC Chemistry 2014 Objective — Question 26
Question 26 of 50 from the West African Examinations Council (WAEC) Chemistry 2014 Objective paper, with the correct answer and a full explanation.
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Given the pH values: Lime 2.4, Banana 4.6, Distilled water 7.0, Milk of magnesia 10.5. Which of the following substances with the corresponding pH value is an alkali?
- A. Lime (2.4)
- B. Banana (4.6)
- C. Distilled water (7.0)
- D. Milk of magnesia (10.5)Correct
Explanation
A pH value less than 7 indicates acidity. The one greater than 7 indicates alkalinity. A pH value of 7 indicates neutrality. Milk of magnesia (pH 10.5) is the alkali.
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