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
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
- ...
a) Determine the molar solubility of Fe(OH)3 in pure water. Ksp
= 2.79 × 10-39 for Fe(OH)3.
(b) Determine the molar solubility of Fe(OH)3 if the pH of the
solution is 8.0.
(c) Determine the molar solubility of Fe(OH)3 if the pH of the
solution is 2.0.