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The p-Block Elements
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Oxoacids of Phosphorus
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Which of the following is a tetrabasic a
Question
Which of the following is a tetrabasic acid?
A
Hypophosphorous acid
B
Metaphosphoric acid
C
Pyrophosphoric acid
D
Orthophosphoric acid
Medium
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Updated on : 2022-09-05
Solution
Verified by Toppr
Correct option is C)
Tetrabasic acid means acids having
4
−
replacable hydrogen atoms.
H
3
P
O
2
⟶
hypophosphorus acid
Metaphosphoric acid
⟶
(
H
P
O
3
)
n
Pyrophosphoric acid
⟶
H
4
P
2
O
7
Orthophosphoric acid
⟶
H
3
P
O
4
Here, pyrophosphoric acid,
H
4
P
2
O
7
have
4
removable
H
+
ions, hence is a tetrabasic.
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