Strong Acids and Weak Acids

  1. Acids are chemical substances that ionize/dissociate in the presence of water to produce hydrogen ions (or hydroxonium ions).
  2. Acids can be classified into 2 categories:
    1. Strong acids
    2. Weak acids
  3. The strength of an acid depends on the degree of ionization/dissociation of the acid.

Strong Acids


Strong acids are acids that ionise completely to form hydrogen ions in water.
Examples:
Sulphuric acid
Hydrochloric acid
Nitric acid

Weak Acids

Weak acids are acids that partly ionise to form hydrogen ions in water.
Examples:
Ethanoic acid
Phosphoric acid
Citric acid



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