Chemistry · May / June 2024 · Paper 11 · Question 24
5070The characteristic properties of acids and bases
The water in a lake is acidic and the fish are dying. The water in the lake needs to be neutralised so that its pH is close to 7. Which compound is added in excess to neutralise the water in the lake?
- Acalcium carbonate
- Bphosphoric acid
- Cpotassium hydroxide
- Dsodium nitrate
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Correct answer: A. calcium carbonate
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