What is the difference between strong and weak acids?

Strong acids completely dissociate in water, releasing all hydrogen ions. Examples include hydrochloric acid (HCl) and sulfuric acid (H₂SO₄). Weak acids partially dissociate, releasing fewer hydrogen ions, like acetic acid (CH₃COOH) and citric acid. The strength of an acid affects its pH and reactivity. Strong acids have low pH (1–3), while weak acids have higher pH (4–6). This distinction is important in chemical reactions, safety, and applications. Strong acids are used in industry, while weak acids are common in food and biological processes.