A solution contains [NaCl] = [Na 2 CO 3 ] = C M. Upon gradu…

Chemistry Ionic Equilibrium Common Ion Effect, Isohydric Solutions, Solubility Product, Ionic Product of Water and Salt Hydrolysis Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

A solution contains [NaCl] = [Na 2 CO 3 ] = C M. Upon gradually adding AgNO 3 (s) : (Assume no hydrolysis of any ion).

Out of AgCl & Ag 2 CO 3 , one having lesser K sp will start precipitating first.

Out of AgCl & Ag 2 CO 3 , one having greater K sp will start precipitating first.

If,

then Ag 2 CO 3 will start precipitating first.

If,

then AgCl will start precipitating first.

Text Solution

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The correct answer is:

& : when number of ions being produced per salt molecule is different, K sp alone cant judge which salt precipitates first.

& : [Ag + ] min. req. for first salt's pptn. = & [Ag + ] min. req. for second salt's pptn. =

So, whichever is minimum, will precipitate first.

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