In which reaction can salt, water, and carbon dioxide all be formed?
Answer and explanation
Correct answer: Reaction of acid with metal carbonate
The governing concept is the characteristic reaction of an acid with a metal carbonate. In general, acid + metal carbonate produces salt + water + carbon dioxide; for example, 2HCl + Na₂CO₃ → 2NaCl + H₂O + CO₂. Therefore option A is correct. An acid with a metal usually produces salt and hydrogen, while simple mixing of salt and water produces no such reaction.
Frequently asked questions
What is the correct answer to this question?
Reaction of acid with metal carbonate
Why is this the correct answer?
The governing concept is the characteristic reaction of an acid with a metal carbonate. In general, acid + metal carbonate produces salt + water + carbon dioxide; for example, 2HCl + Na₂CO₃ → 2NaCl + H₂O + CO₂. Therefore option A is correct. An acid with a metal usually produces salt and hydrogen, while simple mixing of salt and water produces no such 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.
