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Meaning of strong acid
Nitric acid (HNO₃) is a strong acid.
What is meant by a ‘strong acid’?
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Marking points
- 1 States that a strong acid is completely ionised or fully dissociated in aqueous solution.
Full-mark answer
A strong acid is completely ionised in aqueous solution.
Why this answer loses marks
A strong acid has a high concentration.
This confuses strength with concentration; the definition requires complete ionisation when the acid is dissolved in water.