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Byju's Answer
Standard XII
Chemistry
Salt of Weak Acid and Strong Base
Amongst the f...
Question
Amongst the following, the total no. of compound whose aq. Solution turn red litmus paper blue is______.
K
C
N
,
K
2
S
O
4
,
(
N
H
4
)
2
C
2
O
4
,
N
a
C
l
,
Z
n
(
N
O
3
)
2
,
F
e
C
l
3
,
K
2
C
O
3
,
N
H
4
N
O
3
,
L
i
C
N
Open in App
Solution
Bases turn red litmus blue.
Bases listed here are
K
C
N
,
F
e
C
l
2
,
K
2
C
O
3
,
L
i
C
N
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Similar questions
Q.
Among the following, the total number of compounds whose aqueous solution turns red litmus to blue is:
K
C
N
,
K
2
S
O
4
,
(
N
H
4
)
2
C
2
O
4
,
N
a
C
l
,
Z
n
(
N
O
3
)
2
,
F
e
C
l
3
,
K
2
C
O
3
,
N
H
4
N
O
3
,
L
i
C
N
.
Q.
Amongst the following, the total number of compounds whose aqueous solution turns red litmus paper blue is:
K
C
N
,
K
2
S
O
4
,
(
N
H
4
)
2
C
2
O
4
,
N
a
C
l
,
Z
n
(
N
O
3
)
2
,
F
e
C
l
3
,
K
2
C
O
3
,
N
H
4
N
O
3
,
L
i
C
N
Q.
The solubility product of
A
g
2
C
2
O
4
at
25
o
C
is
1.29
×
10
−
11
m
o
l
3
L
−
3
. A solution of
K
2
C
2
O
4
containing
0.1520
m
o
l
in
500
m
L
of water is shaken with excess of
A
g
2
C
O
3
till the following equilibrium is reached.
A
g
2
C
O
3
+
K
2
C
2
O
4
⇌
A
g
2
C
2
O
4
+
K
2
C
O
3
At equilibrium, the solution contains
0.0358
m
o
l
e
of
K
2
C
O
3
. Assuming the degree of dissociation of
K
2
C
2
O
4
and
K
2
C
O
3
to be equal, calculate the solubility product of
A
g
2
C
O
3
.
Q.
A colourless mixture of two substances (A) and (B) (excess) is soluble in
H
2
O
, separately. (A) turns blue litmus red and (B) turns red litmus blue. (A) gives white ppt. with (B), which dissolves in excess of (B) forming (C). (A) when placed in moist air gives fumes and can form dimer. (A) gives white ppt. with
N
H
4
C
l
and
N
H
4
O
H
soluble in (B). (A) also gives white precipitate with
A
g
N
O
3
soluble in
N
H
4
O
H
.
Thus, A turns blue litmus red. It is due to acidic solution because of ________.
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