± Solubility of Zinc Hydroxide in Basic Solution The formation constant for the
ID: 1016204 • Letter: #
Question
± Solubility of Zinc Hydroxide in Basic Solution
The formation constant for the hydroxo complex, Zn(OH)42, is Kf=4.60×1017.
A solubility-product constant, Ksp, corresponds to a reaction with the following general format:
salt(s)cation(aq)+anion(aq)
A formation constant, Kf, corresponds to a reaction with the following general format:
metal ion(aq)+Lewis base(aq)complex ion(aq)
Part A
When Zn(OH)2(s) was added to 1.00 L of a basic solution, 1.18×102 mol of the solid dissolved. What is the concentration of OH in the final solution?
Express your answer with the appropriate units.
SubmitHintsMy AnswersGive UpReview Part
Provide FeedbackContinue
Chemistry 106 Summer 2016
Help
Close
Homework Set #6
± Solubility of Zinc Hydroxide in Basic Solution
ResourcesConstantsPeriodic Table
« previous 2 of 22 next »
± Solubility of Zinc Hydroxide in Basic Solution
The solubility-product constant for Zn(OH)2 is Ksp=3.00×1016.The formation constant for the hydroxo complex, Zn(OH)42, is Kf=4.60×1017.
A solubility-product constant, Ksp, corresponds to a reaction with the following general format:
salt(s)cation(aq)+anion(aq)
A formation constant, Kf, corresponds to a reaction with the following general format:
metal ion(aq)+Lewis base(aq)complex ion(aq)
Part A
When Zn(OH)2(s) was added to 1.00 L of a basic solution, 1.18×102 mol of the solid dissolved. What is the concentration of OH in the final solution?
Express your answer with the appropriate units.
[OH] =SubmitHintsMy AnswersGive UpReview Part
Provide FeedbackContinue
Explanation / Answer
The ksp is 3.0 X 10-16
so it will go as,
(3.00 e-16) (4.6 e+17) = [Zn(OH)42-] [OH-]2 / [OH-]4
138 = [Zn(OH)42-] / [OH-]2
[OH-]2 = [Zn(OH)42-] / 138
[OH-]2 = [1.18×10-2 ] / 138
[OH-]2 = 8.55 e-5
[OH-] = 9.25 X 10-3 M
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.