Chemistry · May / June 2026 · Paper 11 · Question 18
5070The characteristic properties of acids and bases
Copper(II) hydroxide is insoluble in water. Rubidium hydroxide is soluble in water. Which row describes copper(II) hydroxide and rubidium hydroxide?
- Aneither a base nor an alkali | a base and an alkali
- Bneither a base nor an alkali | an alkali but not a base
- Ca base but not an alkali | a base and an alkali
- Da base but not an alkali | an alkali but not a base
As printed in the paper
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Correct answer: C. a base but not an alkali | a base and an alkali
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