Question

Differentiate between Strong and Weak electrolytes:

Answer 1

Strong electrolytes :

1. The compounds which in their aqueous solution or in fused state are almost completely ionised are called strong electrolytes.

2. They allow a large amount of electricity to flow through them and hence are good conductors of electricity.

3. In aqueous solution or molten state, only ions are present.

Examples:

Strong acids : HCl, H₂SO₄ ,HNO₃

Strong bases : NaOH, KOH

Salts : NaCl, NaNO₃ , K2SO₄

Weak electrolytes :

1. The compound which in their aqueous solution or in fused state are partially ionised are called weak electrolytes.

2. They allow small amount of electricity to flow through them and hence are poor conductors of electricity.The compound which in their aqueous solution or in fused state are partially ionised are called weak electrolytes. In aqueous solution or molten state ions as well as unionised molecules are present. Examples :

Weak acids : CH₃COOH, H₂CO₃

Weak bases: NH₄OH, Ca(OH)₂

Salts: CH₃COONH₄