WAEC Chemistry 2012 Objective — Question 2
Question 2 of 50 from the West African Examinations Council (WAEC) Chemistry 2012 Objective paper, with the correct answer and a full explanation.
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Which of the following methods can be used to obtain pure water from a mixture of sand, water and methanoic acid?
- A. Neutralization with NaOH followed by filtration
- B. Neutralization with NaOH followed by distillation
- C. Fractional distillation
- D. Filtration followed by distillationCorrect
Explanation
The sand can be removed using filtration. The water can be separated from the methanoic acid by distillation. Since methanoic acid is of a lower boiling point than water, it distils over first.
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