Calculate the simultaneous solubility of AgCl and AgI. Assu…

Chemistry Ionic Equilibrium Common Ion Effect, Isohydric Solutions, Solubility Product, Ionic Product of Water and Salt Hydrolysis Subjective Type

Published by: CGP EDU Academic Team

Published on: August 14, 2026

Calculate the simultaneous solubility of AgCl and AgI. Assume no hydrolysis of Ag + ion.

K sp (AgCl) = 1 × 10 –10 , K sp (AgI) = 8.5 × 10 –17

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The correct answer is:

CHECK THE SOLUTION.

10 –5 M AgCl, 8.5 × 10 –12 M Ag Ι .

Sol. AgCl Ag + + Cl – Ag I Ag + + I –

(x + y) x (x + y) y

= = = × 10 6

x = 1.8 × 10 6 y x + y ≈ x

(x + y) × x ≈ x 2 = 10 –10 & (x + y) × y ≈ xy = 8.5 × 10 –17

x = 10 –5 & y = 8.5 × 10 –12

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