Chemistry · Oct / Nov 2017 · Paper 12 · Question 23
5070The characteristic properties of acids and bases
A household cleaning compound is used to remove calcium carbonate from bathroom surfaces. The compound reacts with the calcium carbonate to form a soluble salt, carbon dioxide and water. What is the pH of this cleaning compound?
- ApH 2
- BpH 7
- CpH 10
- DpH 14
As printed in the paper
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Correct answer: A. pH 2
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