Chemistry · May / June 2021 · Paper 11 · Question 23
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. Which compound can be 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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