In which reaction are salt, water, and carbon dioxide all definitely formed?
Answer and explanation
Correct answer: Acid and metal carbonate
A metal carbonate reacts with an acid in three stages conceptually: the carbonate produces carbonic acid, which decomposes into water and carbon dioxide, while the metal ion combines with the acid radical to form a salt. The general equation is acid + metal carbonate → salt + water + CO₂. Active metals usually release hydrogen, whereas oxides and bases generally form salt and water only. Hence option A is correct.
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What is the correct answer to this question?
Acid and metal carbonate
Why is this the correct answer?
A metal carbonate reacts with an acid in three stages conceptually: the carbonate produces carbonic acid, which decomposes into water and carbon dioxide, while the metal ion combines with the acid radical to form a salt. The general equation is acid + metal carbonate → salt + water + CO₂. Active metals usually release hydrogen, whereas oxides and bases generally form salt and water only. Hence option A is correct.
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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