21. State the meaning of strong acids and weak acids. Give one example of each
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Examples of strong acids are hydrochloric acid (HCl), perchloric acid (HClO4), nitric acid (HNO3) and sulfuric acid (H2SO4). A weak acid is only partially dissociated, with both the undissociated acid and its dissociation products being present, in solution, in equilibrium with each other. HA ⇌ H+ + A−.
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Strong acid means which is 100% ionised in solution HCl is a strong acid. Weak acid means which does not ionised fully when it is dissolved in water. weak acids are formed by the reaction between hydrogen and a halogen is hydroflouric acid. eg of weak acid: acetic acid, vinegar
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