Question

what is meant by the term strong acid and weak acid

Answer 1

Strong acids dissociate fully in water to produce H+ ions.

• This means one mole of hydrochloric acid (HCl) molecule, would all ‘split’ to form one mole of H+ ions and one mole of Cl– ions.
• They have low ph value.

Weak acids do not fully dissociate.

• Example - Ethanoic acid (CH3COOH) , it does not dissociate.
• They have high ph value.