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Chemistry
Chemistry
Problem
The concentration of
F
e
3
+
\mathrm{Fe^{3+}}
F
e
3
+
in an aqueous solution is
0.010
M
0.010\,\mathrm{M}
0.010
M
. At what pH will
F
e
(
O
H
)
3
\mathrm{Fe(OH)_3}
Fe
(
OH
)
3
just begin to precipitate? (Given
K
s
p
(
F
e
(
O
H
)
3
)
=
4
×
10
−
38
K_{sp}(\mathrm{Fe(OH)_3}) = 4 \times 10^{-38}
K
s
p
(
Fe
(
OH
)
3
)
=
4
×
1
0
−
38
.) a)
1.7
1.7
1.7
b)
11.8
11.8
11.8
c)
2.2
2.2
2.2
d)
3.0
3.0
3.0
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