Precipitation: Ksp vs Q
18. Aqueous Equilibrium / Precipitation: Ksp vs Q / Problem 2
A solution of two silver salts contains 0.0111 M Cl- and 0.0125 M Br-. Upon addition of a very dilute solution of silver nitrate (AgNO3), a precipitate is formed.
A. Identify the precipitate as AgCl or AgBr.
B. Calculate the minimum concentration of Ag+ at which the precipitate begins to form.
Ksp(AgCl) = 1.8×10–10
Ksp(AgBr) = 5.0×10–13
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