Solubility Review Questions Worksheet With Answers Page 4

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SOLUBILITY REVIEW QUESTIONS
2+
-
7.
PbCl
is precipitated from a solution containing Pb
and Cl
. Which one of the
2 (s)
(aq)
(aq)
following relationships describes the concentrations of the ions remaining in the
solution?
2+
2
-
a) [Pb
]
[Cl
] = K
of PbCl
sp
2 (s)
2+
2
-
2
b) [Pb
]
[Cl
]
= K
of PbCl
sp
2 (s)
2+
-
c) [Pb
][Cl
] = K
of PbCl
sp
2 (s)
2+
-
2
d) [Pb
][Cl
]
= K
of PbCl
sp
2 (s)
8.
Which one of the following statements is TRUE about the result of mixing equal
volumes of 0.020 M CaCl
and 0.00040 M Na
SO
?
2
2
4
-5
(K
for CaSO
= 2.4 x 10
)
sp
4 (s)
a) The trial product is smaller than the K
and a precipitate will form.
sp
b) The trial product is larger than the K
and a precipitate will form.
sp
c) The trial product is smaller than the K
and a precipitate will not form.
sp
d) The trial product is larger than the K
and a precipitate will not form.
sp
is 4.0  10
-6
2+
9.
The K
for the salt MA
. What is the [M
] in a saturated solution formed
sp
2
by dissolving MA
in water?
2 (s)
a) 1.0  10
-3
M
b) 2.0  10
-3
M
c) 1.0  10
-2
M
d) 1.6  10
-2
M
10.
Silver acetate, AgCH
COO
, crystals are in equilibrium with a saturated solution.
3
(s)
Which of the following would cause more AgCH
COO
to dissolve?
3
(s)
a) The addition of a few crystals of silver nitrate.
b) The addition of a few drops of concentrated nitric acid.
c) The addition of a few crystals of sodium acetate.
d) The evaporation of some water from the solution with no temperature change.
11.
1.0 L of a saturated solution of thallium bromide (TlBr) was evaporated to dryness to
produce 0.56 g of TlBr
. What is the K
of thallium bromide? (molar mass of TlBr =
(s)
sp
284 g / mol)
a) 2.0  10
-6
b) 3.9  10
-6
c) 2.0  10
-3
d) 4.4  10
-2
2+
2+
2+
2+
12.
A solution contains Ba
, Pb
, Fe
, and Mg
. Which of the following
(aq)
(aq)
(aq)
(aq)
negative ions would cause a precipitate with only one of those metals?
-
a) I
(aq)
2-
b) SO
4
-
c) NO
3
(aq)
3-
d) PO
4
(aq)

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