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291 solutions

Ksp

Q. Given the data below, which pair of compounds are the first to precipitate when hydroxide, OH-, is slowly added?. a) Mn(OH)2 & Fe(OH)2 b) Fe(OH)2 & Zn(OH)2 c) Mg(OH)2 & Fe(OH)2 d) Mn(OH)2 & Zn(OH)2

Solved • Jan 28, 2020

Ksp

Q. Two cations can be most easily separated by selective precipitation when the difference in their Ksp values ____. the anion being used must be maintained _____ the concentration required to precipitate the less soluble cation and _____ the concentration required to precipitate the more soluble cation.

Solved • Jan 28, 2020

Ksp

Q. Which of the following is the solubility product for K2MNO4? a) Ksp = [K^+]^2[MnO4^2-]^4 b) Ksp = [K^+]^2[MnO4^2-]^4 c) Ksp = [K^+][MnO4^2-] d) Ksp = [K^+} [MnO^-] ^4 e) Ksp = [K^+]^2 [MnO4^2-]

Solved • Jan 28, 2020

Ksp

Q. Express the Ksp of Fe2O3 in terms of "x", where x is the molar solubility of Fe2O3. a) Ksp = 36x^5 b) Ksp = 27x^3 c) Ksp = 54x^5 d) Ksp 108x^4 e) Ksp = 108x^5

Solved • Jan 28, 2020

Ksp

Q. At 30 °C the Ksp of Pbl2 is 3.2 x 10^-8. What is the molar solubility of Pbl2 in 1 M solution of Kl? a) 2 x 10^-3 b) 8 x 10^-6 c) 8 x 10^-11 d) 3.2 x 10^-8 e) 2 x 10^-6

Solved • Jan 28, 2020

Ksp

Q. At 30 °C the Ksp of PbI2 is 3.2 x 10^-8. What is the molar solubility? (hint, to make this math you can do in your head, 3.2 x 10^-8 is 32 x 10^-9. a) 1.4 x 10^-5 b) 9 x 10^-5 c) 4 x 10^-3 d) 2 x 10^-3

Solved • Jan 28, 2020

Ksp

Q. Calculate the solubility (in moles per liter) of Fe(OH)3 (Ksp = 4 x 10^-38) in each of the following: a) Water b) a solution buffered at pH = 5.0 c) solution buffered at pH = 11.0 Pls in as much detail as possible!

Solved • Jan 6, 2020