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Byju's Answer
Standard XI
Chemistry
Solubility Product
The salt ZnOH...
Question
The salt
Z
n
(
O
H
)
2
is involved in the following two equilibria:
Z
n
(
O
H
)
2
(
s
)
⇌
Z
n
2
+
(
a
q
)
+
2
O
H
−
(
a
q
)
;
K
s
p
=
1.3
×
10
−
17
Z
n
(
O
H
)
2
(
s
)
+
2
O
H
−
(
a
q
)
⇌
[
Z
n
(
O
H
)
4
]
2
−
(
a
q
)
;
K
c
=
0.13
Calculate the pH of the solution at which solubility is minimum.
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Similar questions
Q.
The salt
Z
n
(
O
H
)
2
is involved in the following two equilibria:
Z
n
(
O
H
)
2
(
s
)
⇌
Z
n
2
+
(
a
q
)
+
2
O
H
−
(
a
q
)
;
K
s
p
=
1.3
×
10
−
17
Z
n
(
O
H
)
2
(
s
)
+
2
O
H
−
(
a
q
)
⇌
[
Z
n
(
O
H
)
4
]
2
−
(
a
q
)
;
K
c
=
0.13
Calculate the pH of the solution at which solubility is minimum.
Q.
Z
n
(
O
H
)
2
is an amphoteric hydroxide which is involved in the following two equilibria existing simultaneously in aqueous solution.
Z
n
(
O
H
)
2
(
s
)
⇌
Z
n
2
+
(
a
q
)
+
2
O
H
−
(
a
q
)
;
K
s
p
=
1.2
×
10
−
17
Z
n
(
O
H
)
2
(
s
)
+
2
O
H
−
(
a
q
)
⇌
[
Z
n
(
O
H
)
4
]
2
−
(
a
q
)
;
K
c
=
0.12
At what
p
H
the solubility of
Z
n
(
O
H
)
2
will be minimum?
Q.
The salt
A
l
(
O
H
)
3
is involved in the following two equilibria.
A
l
(
O
H
)
3
(
s
)
⇌
A
l
3
+
(
a
q
)
+
3
O
H
−
(
a
q
)
;
K
s
p
A
l
(
O
H
)
3
(
s
)
+
O
H
(
a
q
)
⇌
A
l
(
O
H
)
−
4
(
a
q
)
;
K
c
Which of the following relationship is correct when the solubility is minimum?
Q.
Using electron-transfer concept, identify the oxidant and reductant in the following redox reactions.
(a)
Z
n
(
s
)
+
2
H
+
(
a
q
)
⟶
Z
n
2
+
(
a
q
)
+
H
2
(
g
)
(b)
2
[
F
e
(
C
N
)
6
]
3
−
(
a
q
)
+
2
O
H
−
(
a
q
)
+
H
2
O
2
(
a
q
)
→
2
[
F
e
(
C
N
)
6
]
4
−
(
a
q
)
+
2
H
2
O
(
l
)
(c)
2
[
F
e
(
C
N
)
6
]
3
−
(
a
q
)
+
2
O
H
−
(
a
q
)
+
H
2
O
2
(
a
q
)
→
2
[
F
e
(
C
N
)
6
]
4
−
(
a
q
)
+
O
2
(
g
)
+
2
H
2
O
(
l
)
Q.
The salt
A
l
(
O
H
)
3
is involved in the following two equilibria,
A
l
(
O
H
)
3
(
s
)
⇌
A
l
3
+
(
a
q
.
)
+
3
O
H
−
(
a
q
.
)
;
K
s
p
A
l
(
O
H
)
3
(
s
)
+
O
H
−
(
a
q
)
⇌
A
l
(
O
H
)
−
4
(
a
q
.
)
;
K
c
Which of the following relationships is correct when the solubility is minimum?
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