A solution contains 2.1 ✕ 10−5M K2CrO4. What is the minimum concentration of AgNO3 that would...
A solution contains 2.1 ✕ 10−5M K2CrO4. What is the minimum concentration of AgNO3 that would cause precipitation of solid Ag2CrO4 (Ksp = 9.0 ✕ 10−12)?
Molarity?
Homework Answers
Ag2CrO4 -------------------------> 2Ag+(aq) + CrO42-(aq)
Ksp = [Ag+]^2 [CrO42-]
9.0 x 10^-12 = [Ag+]^2 (2.1 x 10^-5)
[Ag+] = 6.55 x 10^-4 M
minimum concentration = 6.55 x 10^-4 M
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