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25/10/2021 12:55 pm
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Solid AgNO3 is slowly added to a solution containing each of 0.01 M NaCl and 0.001 M NaBr. What will be the concentration of Cl- ions in solution when AgBr will just start to precipitate? Ksp(AgBr) = 3.6 × 10-13, Ksp(AgCl) = 1.8 × 10-10.
(a) 1.8 × 10-7
(b) 3.6 × 10-10
(c) 0.01
(d) 2 × 10-4
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25/10/2021 1:12 pm
Correct answer: (c) 0.01
Explanation:
Ksp(AgBr) < Ksp(AgCl)
Therefore, AgBr will precipitate first and at that time all Cl- will be present.