Which products are likely to form when sodium carbonate reacts with dilute acid?
Answer and explanation
Correct answer: Salt, water and carbon dioxide
The governing pattern for a metal carbonate reacting with an acid is acid + carbonate → salt + water + carbon dioxide. For example, Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂. Thus option A lists all three products. Hydrogen belongs to the usual acid–metal reaction, whereas oxygen, a new metal, and a base are not expected products in this reaction.
Frequently asked questions
What is the correct answer to this question?
Salt, water and carbon dioxide
Why is this the correct answer?
The governing pattern for a metal carbonate reacting with an acid is acid + carbonate → salt + water + carbon dioxide. For example, Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂. Thus option A lists all three products. Hydrogen belongs to the usual acid–metal reaction, whereas oxygen, a new metal, and a base are not expected products in this 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.
