Question detail
What is produced when an acid reacts with an alkali?
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 and water
- B. Salt and carbon dioxide
- C. Hydrogen and water
- D. Oxygen and salt
Answer
Salt and water
Explanation
When an acid reacts with an alkali, the products are salt and water due to the neutralisation reaction.
Common mistake
Misidentifying the products in acid‑base word equations
Students often write the products of an acid‑base reaction as the acid and the base instead of the salt and water, e.g. HCl + NaOH → HCl + NaOH
In an acid‑base (or acid‑alkali or acid‑carbonate) reaction the hydrogen ions from the acid combine with the hydroxide ions from the base (or carbonate) to form water, and the remaining ions form a salt. The correct word equation for HCl + NaOH is: acid + alkali → salt + water.
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