Differentiate between a strong alkali and a weak alkali. - Vidyadip

Question

Differentiate between a strong alkali and a weak alkali.

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Answer

An alkali, which almost dissociates completely in an aqueous solution, thereby producing high concentration of OH^- ions is called a strong alkali. For example, lithium hydroxide, sodium hydroxide and potassium hydroxide. An alkali, which dissociates partially in an aqueous solution, thereby producing a low concentration of OH^- ions is called a weak alkali. For example, ammonium hydroxide, calcium hydroxide and magnesium hydroxide.

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