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Tardigrade
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Chemistry
K u values for acids H 2 SO 3, HNO 2, CH 3 COOH and HCN are respectively 1.3 × 10-2, 4 × 10-4, 1.8 × 10-5 and 4 × 10-10, which of the above acids produces stronger conjugate base in aqueous solution?
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Q.
K
u
values for acids
H
2
S
O
3
,
H
N
O
2
,
C
H
3
C
O
O
H
and
H
C
N
are respectively
1.3
×
10
−
2
,
4
×
10
−
4
,
1.8
×
10
−
5
and
4
×
10
−
10
, which of the above acids produces stronger conjugate base in aqueous solution?
KCET
KCET 2021
Equilibrium
A
H
2
S
O
3
14%
B
H
N
O
2
7%
C
C
H
3
C
O
O
H
31%
D
H
C
N
48%
Solution:
K
a
(
H
C
N
)
=
4
×
10
−
10
H
C
N
⇌
H
+
+
C
N
−
Weaker the acid, stronger the conjugate base.