Why is hydrochloric acid called a strong acid?
Answer and explanation
Correct answer: It gives many hydrogen ions in water
The governing concept is acid strength, which is related to the extent to which an acid ionises in water. Hydrochloric acid ionises essentially completely: HCl(aq) → H⁺(aq) + Cl⁻(aq), so it produces a high concentration of hydrogen or hydronium ions and shows strong acidity. Option A is correct. Hydroxide ions characterise bases, while a neutral substance would not show this acidic ionisation.
Frequently asked questions
What is the correct answer to this question?
It gives many hydrogen ions in water
Why is this the correct answer?
The governing concept is acid strength, which is related to the extent to which an acid ionises in water. Hydrochloric acid ionises essentially completely: HCl(aq) → H⁺(aq) + Cl⁻(aq), so it produces a high concentration of hydrogen or hydronium ions and shows strong acidity. Option A is correct. Hydroxide ions characterise bases, while a neutral substance would not show this acidic ionisation.
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.
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