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Byju's Answer
Standard XII
Chemistry
Enthalpy of Neutralisation
In the reacti...
Question
In the reaction
2
N
a
O
H
+
H
3
P
O
4
→
N
a
2
H
P
O
4
+
2
H
2
O
the equivalent weight of the acid is
A
49
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B
98
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C
32.6
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D
36.5
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Solution
The correct option is
A
49
Basicity of
H
3
P
O
4
is three, but only two hydrogen atoms are replaced in the product therefore
M
w
2
=
98
2
=
49
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Similar questions
Q.
In the reaction
2
N
a
O
H
+
H
3
P
O
4
→
N
a
2
H
P
O
4
+
2
H
2
O
, the Equivalent weight of the acid is
Q.
In the reaction:
H
3
P
O
4
+
2
N
a
O
H
→
N
a
2
H
P
O
4
The equivalent weight of
H
3
P
O
4
is:
Q.
C
a
(
O
H
)
2
+
H
3
P
O
4
→
C
a
H
P
O
4
+
2
H
2
O
the equivalent
weight of
H
3
P
O
4
in the above reaction is
Q.
The equivalent mass of
H
3
P
O
4
and
N
a
H
2
P
O
4
in the reaction are respectively :
2
N
a
O
H
+
H
3
P
O
4
→
N
a
2
H
P
O
4
+
2
H
2
O
Q.
In the reaction
N
a
O
H
+
H
3
P
O
4
→
N
a
2
H
P
O
4
+
H
2
O
, the equivalent weight of
H
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P
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(phosphoric acid) is:
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