Chemistry WAEC

When chlorine is passed through a sample of water, the pH of the water sample would be?

A. < 7
B. > 7
C. = 7
D. 0

Correct Answer: Option A

A. < 7

Explanation

Cl2+H2O → HCl+HOCl

The two compounds in the product end are acidic and hence, their mixture is acidic. Hence, the pH is < 7

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