What main products are formed when both metal carbonates and metal hydrogen carbonates react with acids?
Answer and explanation
Correct answer: Salt, water and carbon dioxide
The governing reaction pattern is acid plus carbonate or hydrogencarbonate. In both cases, the acid supplies H+ to form carbonic acid, which decomposes into water and carbon dioxide: CO3^2− + 2H+ → H2O + CO2, while HCO3− + H+ → H2O + CO2. The remaining ions form a salt. Thus option A lists all main products; hydrogen, oxygen and nitrogen are not produced in these reactions.
Frequently asked questions
What is the correct answer to this question?
Salt, water and carbon dioxide
Why is this the correct answer?
The governing reaction pattern is acid plus carbonate or hydrogencarbonate. In both cases, the acid supplies H+ to form carbonic acid, which decomposes into water and carbon dioxide: CO3^2− + 2H+ → H2O + CO2, while HCO3− + H+ → H2O + CO2. The remaining ions form a salt. Thus option A lists all main products; hydrogen, oxygen and nitrogen are not produced in these reactions.
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.
