Chemistry · Oct / Nov 2022 · Paper 12 · Question 28
5070The characteristic properties of acids and bases
Solution X is added to a solid salt, causing gas Y to be evolved. Gas Y dissolves in water resulting in a solution with a pH of less than 7. What are the possible identities of X and Y?
- Aaqueous sodium hydroxide / ammonia
- Baqueous sodium hydroxide / carbon dioxide
- Cdilute hydrochloric acid / ammonia
- Ddilute hydrochloric acid / carbon dioxide
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Correct answer: D. dilute hydrochloric acid / carbon dioxide
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