Byju's Answer
Standard XII
Chemistry
Derivation of Kp and Kc
Kp for the re...
Question
K
p
for the reaction
N
2
(
g
)
+
3
H
2
(
g
)
⇌
2
N
H
3
(
g
)
, at
298
K
is
5.2
×
10
−
5
. What is the value of
K
c
at
298
K
, for the reaction
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
⇌
N
H
3
(
g
)
?
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Solution
K
′
p
for the reaction
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
⇌
N
H
3
(
g
)
is
√
K
p
i.s.,
√
5.2
×
10
−
5
K
c
for the reaction
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
⇌
N
H
3
(
g
)
, will be
(
K
′
p
)
×
(
R
T
)
Δ
n
=
[
√
5.2
×
10
−
5
]
×
0.0821
×
298
=
1.71
×
10
−
2
M
−
1
Here, R is constant.
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Similar questions
Q.
At
527
∘
C
, the reaction given below has
K
c
=
4
N
H
3
(
g
)
⇌
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
What is the
K
P
for the reaction?
N
2
(
g
)
+
3
H
2
(
g
)
⇌
2
N
H
3
(
g
)
.
Q.
At
527
0
C, the reaction
N
H
3
(
g
)
⇌
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
has
K
c
=
4
What is the
K
c
for the reaction?
N
2
(
g
)
+
3
H
2
(
g
)
⇌
2
N
H
3
(
g
)
Q.
For the reaction;
N
2
(
g
)
+
3
H
2
(
g
)
⇌
2
N
H
3
(
g
)
.
At
400
K
,
K
p
=
41
a
t
m
−
2
. Find the value of
K
p
for each of the following reactions at the same temperature:
(i)
2
N
H
3
(
g
)
⇌
N
2
(
g
)
+
3
H
2
(
g
)
;
(ii)
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
⇌
N
H
3
(
g
)
;
(iii)
2
N
2
(
g
)
+
6
H
2
(
g
)
⇌
4
N
H
3
(
g
)
.
Q.
Δ
G
o
for
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
⇌
N
H
3
(
g
)
is
−
16.5
k
J
m
o
l
−
1
. Find out
K
p
for the reaction at
25
o
C
. Also report
K
p
and
Δ
G
o
for
N
2
(
g
)
+
3
H
2
(
g
)
⇌
2
N
H
3
(
g
)
at
25
o
C
.
Q.
At
527
0
, the reaction
N
H
3
(
g
)
⇌
1
2
N
2
(
g
)
+
3
2
H
2
(
g
)
has
K
c
= 4 then what is the value of
k
p
for the same reaction?
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