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Byju's Answer
Standard XII
Physics
Multiplication with Vectors
HA+OH-⟶ H2O+A...
Question
H
A
+
O
H
−
⟶
H
2
O
+
A
−
+
q
1
k
J
H
+
+
O
H
−
⟶
H
2
O
+
q
2
k
J
The enthalpy of dissociation of
H
A
is:
A
(
q
1
+
q
2
)
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B
(
q
1
−
q
2
)
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C
(
q
2
−
q
1
)
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D
−
(
q
1
+
q
2
)
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Solution
The correct option is
B
(
q
2
−
q
1
)
Solution:- (C)
(
q
2
−
q
1
)
k
J
H
A
+
O
H
−
⟶
H
2
O
+
A
−
+
q
1
k
J
.
.
.
.
.
(
1
)
H
+
+
O
H
−
⟶
H
2
O
+
q
2
k
J
H
2
O
⟶
H
+
+
O
H
−
−
q
2
k
J
.
.
.
.
.
(
2
)
Adding
e
q
n
(
1
)
&
(
2
)
, we have
H
A
+
O
H
−
+
H
2
O
⟶
H
2
O
+
A
−
+
H
+
+
O
H
−
+
(
q
1
−
q
2
)
k
J
H
A
⟶
H
+
+
O
H
−
;
Δ
H
=
−
(
q
1
−
q
2
)
k
J
Hence the enthalpy of dissociation of
H
A
is
(
q
2
−
q
1
)
k
J
.
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Q.
C
H
3
C
O
O
H
+
O
H
−
⇋
C
H
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C
O
O
−
+
H
2
O
+
q
1
and
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+
+
O
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−
⇋
H
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+
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Then what is the enthalpy for reaction ?
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