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Byju's Answer
Standard XII
Chemistry
Arrhenius Acid
Ionization of...
Question
Ionization of phosphoric acid gives:
A
H
2
P
O
−
4
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B
H
P
O
−
2
4
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C
P
O
−
3
4
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D
all of these
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Solution
The correct option is
D
all of these
Ionisation of phosphoric acid is as shown below:
1
)
H
2
O
+
H
3
P
O
4
→
H
3
O
+
+
H
2
P
O
−
4
2
)
H
2
O
+
H
2
P
O
−
4
→
H
3
O
+
+
H
P
O
2
−
4
3
)
H
2
O
+
H
P
O
2
−
4
→
H
3
O
+
+
P
O
3
−
4
Hence, option D is the correct answer.
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Similar questions
Q.
First ionization of phosphoric acid is:
H
3
P
O
4
⇌
H
3
P
O
−
4
+
H
+
p
K
a
1
=
2.21
The dissociation constant of conjugate base of
H
3
P
O
4
will be:
Q.
Orthophosphoric acid
(
H
3
P
O
4
)
is a weak tribasic mineral acid,
H
3
P
O
4
⇌
H
+
+
H
2
P
O
−
4
;
K
a
1
=
10
−
3
H
2
P
O
−
4
⇌
H
+
+
H
P
O
−
2
4
;
K
a
2
=
10
−
7
H
P
O
−
2
4
⇌
H
+
+
P
O
−
3
4
;
K
a
3
=
10
−
13
In a solution of
0.1
M
H
3
P
O
4
, concentration of
P
O
3
−
4
is:
Q.
In a buffer solution of
N
a
H
2
P
O
4
and
N
a
2
H
P
O
4
:
Q.
Ionisation equations of Phosphoric acid are given
H
3
PO
4
------ H
+
+ A
A ------ H
+
+ HPO
4
2-
HPO
4
2-
------ H
+
+ B
Write down the formulae of ions A and B
Q.
In the following equivalent reaction
H
C
2
O
−
4
+
P
O
−
3
4
→
H
P
O
−
2
4
+
C
2
O
−
2
4
Which of the following are two Bronsted bases?
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