Unit 5.2: Strong acids/bases and weak acids/bases

Examination Guidelines 

• Strong acids ionise completely in water to form a high concentration of H₃O⁺ ions.
• Weak acids ionise incompletely in water to form a low concentration of H₃O⁺ ions.
• Strong bases dissociate completely in water to form a high concentration of OH^– ions.
• Weak bases dissociate/ionise incompletely in water to form a low concentration of OH^– ions.

 Concentrated/Dilute Acids/Bases

• Concentrated acids/bases contain a large amount (number of moles) of acid/base in proportion to volume of water.
• Dilute acids/bases contain a small amount (number of moles) of acid/base in proportion to volume of water.