What are strong and weak acids ? In the following list of acids, separate strong acids from weak acids. Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, sulphuric acid.

Explanation

In aqueous solutions strong acids ionise completely and provide hydronium ions. On the other hand weak acids are partially ionised and an aqueous solution of same molar concentration provides a much smaller concentration of `H_(3)O^(+)` ions.
Strong acids - Hydrochloric acid, sulphuric acid, nitric acid
Weak acids - Citric acid, acetic acid, formic acid