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Standard IX
Chemistry
Question
Which is the strongest acid in the following?
H
2
S
O
4
H
C
l
O
4
H
2
S
O
3
H
C
l
O
3
A
H
2
S
O
4
B
H
C
l
O
3
C
H
C
l
O
4
D
H
2
S
O
3
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Solution
Verified by Toppr
Among the given acids, perchloric acid
H
C
l
O
4
is the strongest acid. This is because the conjugate base
C
l
O
−
4
ion is the weakest base.
Among oxyacids of halogens the decreasing order of the acid strength is:
H
C
l
O
4
>
H
C
l
O
3
>
H
C
l
O
2
>
H
C
l
O
Hence, option
C
is correct.
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3
Similar Questions
Q1
Assertion:
H
C
l
O
4
is a strong acid than
H
C
l
O
3
.
Reason: Oxidation state of Cl in
H
C
l
O
4
is +7 and in
H
C
l
O
3
, it is + 5.
View Solution
Q2
The increasing order of acid strength
H
C
l
O
4
,
H
C
l
O
3
,
H
C
l
O
2
,
H
C
l
O
is:
View Solution
Q3
The order of acidic strength of
H
O
C
l
,
H
C
l
O
2
,
H
C
l
O
3
and
H
C
l
O
4
are:
View Solution
Q4
Assertion :
H
C
l
O
4
is stronger acid than
H
C
l
O
3
. Reason: Oxidation state of Cl in
H
C
l
O
4
is
+
VII and in
H
C
l
O
3
; it is
+
V.
View Solution
Q5
Assertion :
H
C
l
O
4
is a stronger acid than
H
C
l
O
3
. Reason: Oxidation state of chlorine in
H
C
l
O
4
is +7 and in
H
C
l
O
3
is +5.
View Solution