Calcium hydroxide is added in the treatment of town water supply to

Assessment: JAMB UTME - Chemistry - 1989 Subject: Chemistry

Question 1 Report

Calcium hydroxide is added in the treatment of town water supply to
Answer Details
Calcium hydroxide is added to town water supply in order to facilitate coagulation of organic particles. Coagulation is the process of clumping together of small particles into larger particles, which can then be removed from the water through sedimentation. The addition of calcium hydroxide raises the pH of the water, which helps the coagulation process by making the particles more attracted to each other. This helps to remove impurities from the water, making it cleaner and safer to drink. It does not directly kill bacteria in the water or improve the taste of the water.
Read lesson note on Acids, Bases And Salts (Ghana Only) (WAEC)
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