Chemistry - Ionic Equilibrium Question with Solution | TestHub

ChemistryIonic EquilibriumPrecipitationMedium2 minQB

ChemistryMediummultiple choice

An aqueous solution contains $CO_{3}^{2 -}$ and $S^{2 -}$ ion. Which can precipitate both :-

Answer:

B, C

Solution:

AgNO₃ forms insoluble Ag₂CO₃ (yellow ppt) and Ag₂S (black ppt), so it precipitates both ions.

Pb(NO₃)₂ forms insoluble PbCO₃ (white ppt) and PbS (black ppt), so it also precipitates both ions.

CaCl₂ gives CaCO₃ ppt but CaS is sufficiently soluble, so it does not precipitate both.

KOH does not form precipitates with either CO₃²⁻ or S²⁻.

Stream:JEESubject:ChemistryTopic:Ionic EquilibriumSubtopic:Precipitation

⏱ 2mℹ️ Source: QB

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