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Standard XII
Chemistry
Difference between Internal Energy and Enthalpy
Question
For the gaseous reaction :
N
2
O
4
⟶
2
N
O
2
Δ
H
>
Δ
U
Δ
H
<
Δ
U
Δ
H
=
Δ
U
Δ
H
=
0
A
Δ
H
>
Δ
U
B
Δ
H
=
0
C
Δ
H
<
Δ
U
D
Δ
H
=
Δ
U
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Solution
Verified by Toppr
Δ
H
=
Δ
U
+
Δ
n
R
T
Δ
n
=
n
P
−
n
R
=
2
−
1
=
1
∴
Δ
H
=
Δ
U
+
(
1
)
R
T
∴
Δ
H
>
Δ
U
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3
Similar Questions
Q1
N
2
O
4
⟶
2
N
O
2
For this reaction relate
Δ
H
and
Δ
U
.
View Solution
Q2
For which reaction,
Δ
H
>
Δ
U
? (
Δ
H
=
change in enthalpy,
Δ
U
=
change in internal energy )
View Solution
Q3
For gaseous reactions, if
Δ
H
is the change in enthalpy and
Δ
U
that in internal energy, then
Δ
H
is always greater than
Δ
U
.
If true 1 else 0.
View Solution
Q4
For the reaction, N
2
+ 3H
2
⇌ 2NH
3
, ∆H= …………….
View Solution
Q5
Assertion :In the following reaction:
C
(
s
)
+
O
2
(
g
)
⟶
C
O
2
(
g
)
;
Δ
H
=
Δ
U
−
R
T
Reason:
Δ
H
is related to
Δ
U
by the equation,
Δ
H
=
Δ
U
−
n
g
R
T
View Solution