Calculate the molar solubility of Fe(OH)2 in a buffer
solution where the pH has been fixed at the indicated values.
Ksp = 7.9 x 10-16.
(a) pH 8.0
___ M
(b) pH 10.7
___ M
(c) pH 13.6
___ M
HopHelpCh17N6
What is the molar solubility of Fe(OH)3 in a solution
buffered at pH = 4.52? (See the appendix.)
M
What is the molar solubility at pH = 8.16?
M
Substance
Ksp at 25 oC
Aluminum
Al(OH)3
1.9 x 10-33
Barium
Ba(OH)2
5.0 x 10-3
BaCO3
8.1 x 10-9
BaSO4
1.1 x 10-10
Ba3(PO4)2
3.4 x 10-23
Cadmium
Cd(OH)2
2.5 x 10-14
CdCO3
5.2 x 10-12
CdS
8.0 x 10-27
Calcium
Ca(OH)2
5.5 x 10-6
CaCO3
4.8 x 10-9
Ca3(PO4)2
1.0...
Part A
Calculate the molar solubility of Ni(OH)2 when buffered at
pH=8.0.
Express your answer using one significant figure.
Part B
Calculate the molar solubility of Ni(OH)2 when buffered at pH =
10.3.
Express your answer using one significant figure.
Part C
Calculate the molar solubility of Ni(OH)2 when buffered at pH =
12.0.
Express your answer using one significant figure.
The Ksp value is 3.0x10^-16 for Zn(OH)2. Calculate the molar
solubility of Zn(OH)2 at room temperature in the solution of 0.0100
M KCl (inert to any reaction with Zn(OH)2) using (1) Activities and
(2) molar concentration.
What is the solubility of Mg(OH)2 in an aqueous solution
buffered to a pH of 13.13? The Ksp of Mg(OH)2 is 1.8 x 10-11. Hint:
Determine the [OH-] from the pH then deal with solubility with
common ion.
Determine if adding each of the following to a saturated
Ca3(PO4)2 solution will increase,
decrease, or have little to no effect on it ssolubility.
- A.
B. C.
HCl
- ...