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Question
Chemistry
What is the solubility of Al ( OH )3,( K sp =. .1 × 10-33) in a buffer solution pH =4 ?
Q. What is the solubility of
A
l
(
O
H
)
3
,
(
K
s
p
=
1
×
1
0
−
33
)
in a buffer solution
p
H
=
4
?
2602
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A
1
0
−
3
M
35%
B
1
0
−
6
M
15%
C
1
0
−
4
M
12%
D
1
0
−
10
M
38%
Solution:
p
H
=
4
⇒
[
H
+
]
=
1
0
−
4
M
⇒
[
O
H
−
]
=
1
0
−
10
M
A
l
(
O
H
)
3
⇌
A
l
+
3
+
3
O
H
−
K
s
p
(
A
l
(
O
H
)
3
)
=
[
A
l
+
3
]
[
O
H
−
]
3
[
A
l
3
+
]
[
O
H
−
]
3
=
1
×
1
0
−
33
[
A
l
3
+
]
(
1
0
−
10
)
3
=
1
×
1
0
−
33
⇒
[
A
l
+
3
]
=
1
0
−
3
M