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Acids, Bases and Salts — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYAcids, Bases and Salts3 Marks
Question
What is the difference between a strong base and a weak base ? Explain with examples.
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Answer

Bases that undergo complete dissociation in aqueous solution and produce a high concentration of hydroxide ions $(OH^–)$ in solution are called strong bases.
Examples : Potassium hydroxide $(KOH)$ and sodium hydroxide $(NaOH)$. Bases that undergo partial dissociation in aqueous solution and produce a low concentration of hydroxyl ions $(OH^–)$ in solution are called weak bases.
Examples : Magnesium hydroxide $[Mg(OH)_2]$ and ammonium hydroxide $[NH_4OH]$.

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