Solubility Review Questions Worksheet With Answers Page 11
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14SOLUBILITY REVIEW QUESTIONS
52.
Temperature
Solubility of Ca(CH
COO)
3
2
37.4 g / 100 g H
O
0C
2
29.7 g / 100 g H
O
100C
2
Use the information above to answer the following:
A saturated solution of Ca(CH
COO)
at 20C is warmed to 30C. The solubility of
3
2
Ca(CH
COO)
will
3
2
a) more than double.
b) increase slightly.
c) remain the same.
d) decrease slightly.
53.
The solubility of KI is 35 g of KI per 100 g of H
O at 20C. A KI solution at 20C
2
containing 25 g of KI per 100 g H
O would be
2
a) saturated.
b) insoluble
c) unsaturated
d) supersaturated
-
54.
The NO
ion concentration in a 0.10 M solution of Ba(NO
)
is
3
3
2
a) 0.10 M
b) 0.13 M
c) 0.20 M
d) 0.50 M
55.
Which compound has the lowest solubility at 25C ?
a) CuI
b) CaS
c) FeSO
4
d) Pb(CH
COO)
3
2
2+
2+
56.
Which ion should be used to remove the cations Ca
and Mg
from
‘hard’ water?
2-
a) CO
3
-
b) Cl
-
c) NO
3
-
d) CH
COO
3
57.
The K
expression for a saturated Fe(OH)
solution is:
sp
3
3+
-
3
a) K
= [Fe
][3OH
]
sp
3+
-
3
b) K
= [Fe
][OH
]
sp
3+
-
c) K
= [Fe
][3OH
] / [Fe(OH)
]
sp
3
3+
-
3
d) K
= [Fe
][OH
]
/ [Fe(OH)
]
sp
3
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