WAEC Chemistry 2020 Objective — Question 43

Question 43 of 50 from the West African Examinations Council (WAEC) Chemistry 2020 Objective paper, with the correct answer and a full explanation.

Consider the reaction represented by the following equation: AgNO3(aq)+NaCl(aq)->AgCl(s)+NaNO3(aq). The steps that could be taken to obtain a pure dry sample of AgCl(s) from the mixture includes

A. heating to saturation and drying
B. filtering and evaporation to dryness
C. filtering, washing and dryingCorrect
D. crystallizing and allowing to cool

Explanation

Since AgCl is insoluble in water, it is obtained from a mixture containing NaNO3 solution by filtration, washing and drying.

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