How to compare acidic strength of h3po3 and hno2?
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hey here is your answer
As physical scientists, however, we should look at actual measurements, namely the
p
K
a
values of each acid in water.
H
I
,
p
K
a
=
−
10
(estimated)
H
2
S
O
4
,
p
K
a
1
=
−
3
,
p
K
a
2
=
1.99
H
N
O
3
,
p
K
a
=
−
1.4
H
3
P
O
3
,
p
K
a
1
=
1.3
,
p
K
a
2
=
6.7
H
F
,
p
K
a
=
3.17
Importantly, the acidity of the hydrogen halides should increase down the Group, inasmuch as there is poorer overlap between the halogen and hydrogen as the halogen becomes bigger. Hydrofluoric acid (which is truly nasty stuff, and can cause horrible burns) is thus the weakest acid of the hydrogen halides, because of the strength of the
H
−
X
bond, and the polarizing ability of
F
−
.
hope it help you ☺️
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