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Byju's Answer
Standard XII
Chemistry
Gibbs Free Energy & Spontaneity
For the equil...
Question
For the equilibirium,
P
C
l
5
(
g
)
⇌
P
C
l
3
(
g
)
+
C
l
2
(
g
)
K
c
=
1.8
×
10
−
7
Calculate
Δ
G
o
for the reaction
(
R
=
8.314
J
K
−
1
m
o
l
−
1
)
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Solution
We know that
Δ
G
o
=
−
2.303
R
T
log
K
c
−
2.303
×
8.314
×
298
log
(
1.8
×
10
−
7
)
=
38484
J
m
o
l
−
1
=
38.484
k
J
m
o
l
−
1
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0
Similar questions
Q.
P
C
l
5
(
g
)
→
P
C
l
3
(
g
)
+
C
l
2
(
g
)
at 298 K,
K
c
=
1.8
×
10
−
7
.
What is
Δ
G
0
for the reaction?
Q.
For the reaction
P
C
l
5
(
g
)
⇔
P
C
l
3
(
g
)
+
C
l
2
(
g
)
,
K
c
is:
Q.
For
P
C
l
5
(
g
)
⇌
P
C
l
3
(
g
)
+
C
l
2
(
g
)
,
Write the expression for
K
c
?
Q.
The equilibrium constant for the reaction given below is
2.0
×
10
−
7
at
300
K. Calculate the standard entropy change for the reaction.
(
Δ
H
0
=
28.4
k
J
m
o
l
−
1
)
P
C
l
5
(
g
)
⇌
P
C
l
3
(
g
)
+
C
l
2
(
g
)
Q.
For
P
C
l
5
(
g
)
⇌
P
C
l
3
(
g
)
+
C
l
2
(
g
)
,
write the expression of
K
c
.
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