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Question
Chemistry
In an isobaric process, when temperature changes from T1 to T2, Δ S is equal to
Q. In an isobaric process, when temperature changes from
T
1
to
T
2
,
Δ
S
is equal to
2466
251
AIIMS
AIIMS 2009
Thermodynamics
Report Error
A
2.303
C
P
lo
g
(
T
2
/
T
1
)
36%
B
2.303
C
P
lo
g
(
T
2
/
T
1
)
34%
C
C
p
ln
(
T
1
/
T
2
)
18%
D
C
V
ln
(
T
2
/
T
1
)
12%
Solution:
The entropy change for a process, when
T
and
P
are the variables is given by
Δ
S
=
C
P
I
n
T
1
T
2
−
R
I
n
P
1
P
2
For an isobaric process
P
1
=
P
2
.
Hence the above equation reduces to
C
P
I
n
T
1
T
2
=
Δ
S
.
or
Δ
S
=
2.303
C
P
l
o
g
T
1
T
2
.