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Byju's Answer
Standard IX
Chemistry
pH of a Solution
Which one of ...
Question
Which one of following will have the largest pH?
A
Solution containing
1
×
10
−
2
mol of
K
2
S
O
4
L
−
1
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B
Pure water
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C
Solution containing
1.0
×
10
−
2
mol of
H
C
l
L
−
1
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D
Solution containing
1
×
10
−
2
mol of
N
H
4
O
H
L
−
1
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Solution
The correct option is
D
Solution containing
1
×
10
−
2
mol of
N
H
4
O
H
L
−
1
p
H
=
−
l
o
g
[
H
+
]
M
/
100
H
C
l
p
H
=
2
10
−
2
mol
N
H
4
O
H
p
H
=
14
−
p
O
H
=
14
−
2
=
12
Pure water and
K
2
S
O
4
have
p
H
=
7
.
Suggest Corrections
0
Similar questions
Q.
Calculate the ratio of pH of a solution containing 1 mol of
C
H
3
C
O
O
N
a
+ 1 mol of
H
C
l
per litre to another solution containing 1 mol of
C
H
3
C
O
O
N
a
+ 1 mol of acetic acid per litre.
Q.
Find the minimum concentration of
P
b
2
+
ions that will initiate the precipitation of
P
b
S
O
4
from a solution containing
0.005
m
o
l
L
−
1
of
S
O
2
−
4
ions?
(Given
K
s
p
for
B
a
S
O
4
=
1.8
×
10
−
8
)
Q.
At
25
∘
C
,
consider
1
L
of two solutions as following:
Solution A : Contains
1
m
o
l
C
H
3
C
O
O
N
a
+
0.5
m
o
l
H
C
l
Solution B : Contains
1
m
o
l
C
H
3
C
O
O
N
a
+
0.5
m
o
l
C
H
3
C
O
O
H
If
K
a
(
C
H
3
C
O
O
H
)
=
10
−
5
then ratio of [
H
+
(aq.)] of solution A to that of solution B is,
(Given:
l
o
g
1
=
0
a
n
d
l
o
g
2
=
0.3
,
l
o
g
(
5
×
10
−
6
=
−
5.3
)
Q.
Calculate the ratio of pH of a solution containing 1 mol. of
C
H
3
C
O
O
N
a
+
1
m
o
l
of HCl per litre and of other solution containing 1 mol of
C
H
3
C
O
O
N
a
+
1
m
o
l
of
C
H
3
C
O
O
H
per litre.
Q.
Calculate the pH of the buffer containing
1.0
m
o
l
L
−
1
of weak acid HA and
0.1
m
o
l
L
−
1
of is sodium salt
N
a
A
assuming
K
a
to be
10
−
6
.
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