Question detail
What is the main product when an acid reacts with a carbonate?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactions of acids
Question
- A. Salt, water, and carbon dioxide
- B. Salt and hydrogen
- C. Salt and oxygen
- D. Salt and hydrogen gas
Answer
Salt, water, and carbon dioxide
Explanation
When an acid reacts with a carbonate, the products are a salt, water, and carbon dioxide gas.
Common mistake
Misidentifying the solid reactant as the salt
Students write the insoluble solid (e.g. ZnS) as the product of the soluble salt preparation, rather than recognising it as the reactant that is added in excess
Explain that in a soluble salt preparation the insoluble solid is the reactant that reacts with the acid to form the soluble salt and a gas; the product is the soluble salt, not the solid that was added.
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