Differentiate between strong and weak alkali with suitable examples

1.	Differentiate between strong and weak alkali with suitable examples and ionic equations.
Answer» Strong Alkali – Is an alkali which dissociates – almost completely in aqueous solution thereby producing a – high concentration of hydroxyl [OH^– ] ions. NaOH [aq] ⇋ Na⁺ + OH^- KOH [aq] ⇋ K⁺ + OH^- [contains almost - only ions] Examples: Lithium, Sodium and Potassium hydroxide Weak alkali – Is an alkali which dissociates – only partially in aqueous solution thereby producing a – low concentration of hydroxyl [OH^–] ions. NH₄OH [aq] ⇋ NH₄⁺ + OH^- [contains - molecule and ions] Examples: Ammonium hydroxide and Calcium hydroxide.

Differentiate between strong and weak alkali with suitable examples and ionic equations.

Answer»

Strong Alkali – Is an alkali which dissociates – almost completely in aqueous solution thereby producing a – high concentration of hydroxyl [OH^– ] ions.

NaOH [aq] ⇋ Na⁺ + OH^-

KOH [aq] ⇋ K⁺ + OH^-

[contains almost - only ions]

Examples: Lithium, Sodium and Potassium hydroxide

Weak alkali – Is an alkali which dissociates – only partially in aqueous solution thereby producing a – low concentration of hydroxyl [OH^–] ions.

NH₄OH [aq] ⇋ NH₄⁺ + OH^-

[contains - molecule and ions]

Examples: Ammonium hydroxide and Calcium hydroxide.

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