WAEC Chemistry 2014 Theory — Question 22

Question 22 of 38 from the West African Examinations Council (WAEC) Chemistry 2014 Theory paper, with the correct answer and a full explanation.

3(a)(iii). State two disadvantages of hardness of water.

Model answer

(i) Hard water does not form lather readily with soap, wasting soap. (ii) Hard water cannot be used in certain industrial processes (such as dyeing) because the ions present can interfere with the chemistry of those processes.

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