Medical Chemistry Practice Test

Which of the following is formed when an acid reacts with an alkali?

Salt Water Salt and water Gas

Correct Answer:

Salt and water

Explanation:

Neutralization between an acid and an alkali yields salt and water. In solution, the hydrogen ions from the acid combine with the hydroxide ions from the alkali to form water, while the remaining ions form the salt. This is why the typical products are salt and water, not a gas or just salt or just water. For example, HCl reacting with NaOH gives NaCl (salt) and H2O (water). Gas would only appear in reactions that produce a gas (like acid reacting with carbonate to release CO2), not in a simple acid–alkali neutralization.

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