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Byju's Answer
Standard XII
Chemistry
Common Ion Effect
The pH at w...
Question
The
p
H
at which
M
g
(
O
H
)
2
begins to precipitate from a solution containing
0.10
M
M
g
2
+
ions.
K
s
p
M
g
(
O
H
)
2
=
10
−
11
is _______.
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Solution
For the just precipitation of
M
g
(
O
H
)
2
from a solution having
[
M
g
2
+
]
=
0.10
M
K
s
p
=
[
M
g
+
]
[
O
H
−
]
2
1
×
10
−
11
=
[
0.1
]
[
O
H
−
]
2
∴
[
O
H
−
]
=
10
−
5
M
or
p
O
H
=
5
∴
p
H
=
14
−
p
O
H
=
14
−
5
=
9
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0
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