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Byju's Answer
Standard XII
Chemistry
Rate Constant
The following...
Question
The following data were obtained during first order thermal decomposition of
N
2
O
3
(
g
)
at constant volume:
2
N
2
O
3
(
g
)
⟶
2
N
2
O
4
(
g
)
+
O
2
(
g
)
S.No
Time (s)
Total Pressure (atm)
1
0
0.5
2
100
0.512
Calculate the rate constant.
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Solution
2
N
2
O
3
(
g
)
⟶
2
N
2
O
4
(
g
)
+
O
2
(
g
)
t
=
0
0.5
0
0
t
=
100
0.5
−
2
x
2
x
x
At
t
=
100
s
, total pressure is
0.512
a
t
m
∴
0.5
−
2
x
+
2
x
+
x
=
0.512
0.5
+
x
=
0.512
x
=
0.012
a
t
m
P
(
N
2
O
5
)
at
t
=
100
=
0.476
a
t
m
Now using first order equation,
k
t
=
l
n
(
a
o
a
o
−
x
)
k
×
100
=
l
n
(
0.5
0.476
)
k
=
4.91
×
10
−
4
s
−
1
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Similar questions
Q.
The following data were obtained during the first order thermal decomposition of
N
2
O
5
(
g
)
at constant volume.
2
N
2
O
5
(
g
)
→
2
N
2
O
4
(
g
)
+
O
2
(
g
)
Time (s)
0
100
Total pressure (atm)
0.5
0.512
Calculate the reaction rate when the total pressure is 0.52 atm.
Q.
The following data were obtained during the first order thermal decomposition of
S
O
2
C
l
2
at a constant volume.
S
O
2
C
l
2
(
g
)
→
S
O
2
(
g
)
+
C
l
2
(
g
)
Experiment
Time in
s
−
1
Total pressure in atm
1
0
0.4
2
100
0.7
Calculate the rate constant.
(Given: log 4 = 0.6021, log 2 = 0.3010)
Q.
Experiment
Time
(
s
−
1
)
Total pressure (atm)
1
0
0.4
2
100
0.7
The following data were obtained during the first order thermal decomposition of
S
O
2
C
l
2
at a constant volume.
S
O
2
C
l
(
g
)
⟶
S
O
2
(
g
)
+
C
l
2
(
g
)
Calculate the rate constant. (Given:
log
4
=
0.6021
,
log
2
=
0.3010
)
Q.
The following data were obtained during the first order thermal decomposition of
S
O
2
C
l
2
at constant volume
S
O
2
C
l
2
(
g
)
→
S
O
2
(
g
)
+
C
l
2
(
g
)
Expt
Time /
S
−
1
Total pressure/ atm
1
0
0.5
2
100
0.6
when the total pressure is 0.65 atm then the rate constant of reaction is ..............
if a = pi, and a - x = 2pi - Pt
Q.
The following data in the table were obtained during the first order thermal decomposition of
S
O
2
C
l
2
at a constant volume:
S
O
2
C
l
2
(
g
)
⟶
S
O
2
(
g
)
+
C
l
2
(
g
)
Calculate the rate constant.
(Given:
log
4
=
0.6021
,
log
2
=
0.3010
)
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