Copper oxide reacts with acid to form salt and water. What nature does this prove?
Answer and explanation
Correct answer: Basic
The governing concept is neutralisation between a basic oxide and an acid. Copper(II) oxide reacts as follows: CuO + 2HCl → CuCl₂ + H₂O. Formation of salt and water from an oxide and an acid indicates that the oxide has basic character. Therefore option B is correct. Acidic, neutral and volatile describe different properties and do not explain this neutralisation reaction.
Frequently asked questions
What is the correct answer to this question?
Basic
Why is this the correct answer?
The governing concept is neutralisation between a basic oxide and an acid. Copper(II) oxide reacts as follows: CuO + 2HCl → CuCl₂ + H₂O. Formation of salt and water from an oxide and an acid indicates that the oxide has basic character. Therefore option B is correct. Acidic, neutral and volatile describe different properties and do not explain this neutralisation reaction.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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