Part A The removal of an ion is sometimes considered to be complete when its con

Question

Part A

The removal of an ion is sometimes considered to be complete when its concentration drops to 1.00×106  M. What concentration of hydroxide would cause Y2+ to "completely" precipitate from a solution?

Express your answer with the appropriate units.

The hydroxide ion has the formula OH. The solubility-product constants for three generic hydroxides are given here. Generic hydroxide Ksp XOH 3.10×108 Y(OH)2 3.10×1010 Z(OH)3 6.00×1015 Use these values to answer the following questions.

Part A

The removal of an ion is sometimes considered to be complete when its concentration drops to 1.00×106  M. What concentration of hydroxide would cause Y2+ to "completely" precipitate from a solution?

Express your answer with the appropriate units.

Explanation / Answer

Given : Ksp for Y(OH)2 is 3.10 x10^-10,

[Y2+] = 1.0x10^-6

Plugging all this into the Ksp equation

Ksp = [Y2+][OH-]^2

3.10 x10^-10 = (1.0x10^-6)[OH-]^2
[OH-] = 0.0176 M

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