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Standard XII
Chemistry
Depression in Freezing Point
22. 1 mole of...
Question
22. 1 mole of an ideal gas A (CV=3R) and 2 mole of an ideal gas B are (CV=3/2R) taken in a container and expanded reversible and adiabatically from 1 litre to 4 litre starting from initial temp. of 320K. Find U
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Q.
1
mole of an ideal gas
A
(
C
v
,
m
=
3
R
)
and
2
mole of an ideal gas
B
are
(
C
v
,
m
3
2
R
)
taken in a container and expanded reversible and adiabatically from
1
litre to
4
litre starting from initial temperature of
320
K.
△
E
o
r
△
U
for the process is:
Q.
1
m
o
l
e
of an ideal gas
A
(
C
v
,
m
=
3
R
)
and
2
m
o
l
e
of an ideal gas
B
are
(
C
V
,
m
=
3
2
R
)
taken in a container and expanded reversible and adiabatically from
1
l
i
t
r
e
t
o
4
l
i
t
r
e
starting from initial temperature of
320
K
.
Δ
E
or
Δ
U
for the process is:
Q.
2 moles of an ideal gas A (
C
P
=
4
R
) and 4 moles of an ideal gas B (
C
V
=
3
R
2
) are taken together in a container and allowed to expand reversibly and adiabatically from 49L to 64L, starting from an initial temperature of
47
0
C. The final temperature of the gas is :
Q.
A gas
(
C
v
,
m
=
5
2
R
)
behaving ideally was allowed to expand reversibly and adiabatically from
1
l
i
t
r
e
to
32
l
i
t
r
e
. It's initial temperature was
327
o
C
.
The molar enthalpy change (in
J
m
o
l
e
−
1
) for the process is
Q.
A gas
(
C
v
,
m
=
5
2
R
)
behaving ideally was allowed to expand reversibly and adiabatically from
1
l
i
t
r
e
to
32
l
i
t
r
e
. It's initial temperature was
327
o
C
.
The molar enthalpy change (in
J
m
o
l
e
−
1
) for the process is
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