Solubility Review Questions Worksheet With Answers Page 5
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14SOLUBILITY REVIEW QUESTIONS
for PbS is 3.4 10
-28
2-
13.
The K
. What is the [S
] in a saturated solution of PbS?
sp
a) 4.4 10
-10
M
b) 5.9 10
-13
M
c) 1.8 10
-14
M
d) 1.7 10
-28
M
3-
14.
Phosphate ions, PO
, form a compound of low solubility with
4
+
a) NH
4
+
b) K
+
c) H
2+
d) Ca
15.
Some solid NaCH
COO is added to a saturated AgCH
COO solution in contact with
3
3
AgCH
COO crystals. Which of the following occurs?
3
a) The NaCH
COO solid does not dissolve.
3
b) More AgCH
COO dissolves.
3
c) AgCH
COO precipitates.
3
d) There is no change in the amount of dissolved AgCH
COO.
3
16.
The process by which ions are surrounded by water molecules is called
a) hydration.
b) ionization.
c) hydrolysis.
d) dissociation.
17.
Which is the most soluble of the silver salts listed below?
= 5.0 10
-13
a) AgBr
K
sp
= 4.0 10
-5
b) AgBrO
K
3
sp
= 1.7 10
-10
c) AgCl
K
sp
= 4.0 10
-8
d) AgIO
K
3
sp
18.
When crystals of ammonium chloride are added to water, the crystals dissolve readily
and the temperature decreases. The dissolving of ammonium chloride in water is
therefore
a) endothermic and spontaneous.
b) exothermic and spontaneous.
c) endothermic but not spontaneous.
d) exothermic but not spontaneous.
19.
Which of the following anions in a concentrated solution will form a precipitate with
2+
2+
0.10 M Pb
but will not form a precipitate with 0.10 M Ba
?
2-
a) CO
3
2-
b) SO
4
3-
c) PO
4
-
d) Cl
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