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Byju's Answer
Standard XII
Chemistry
Reaction Quotient
In the prepar...
Question
In the preparation of
C
a
O
from
C
a
C
O
3
using the equilibrium
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
g
)
K
p
is expressed as:
log
K
p
=
7.282
−
8500
T
for complete decomposition of
C
a
C
O
3
the temperature in celsius to be used is:
A
1167
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B
894
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C
8500
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D
850
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Solution
The correct option is
B
894
In the preparation of
C
a
O
from
C
a
C
O
3
using the equilibrium
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
g
)
K
p
is expressed as:
log
K
p
=
7.282
−
8500
T
for complete decomposition of
C
a
C
O
3
the temperature in celsius to be used is
894
.
For complete decomposition of
C
a
C
O
3
K
p
=
1
log
K
p
=
l
o
g
1
=
0
log
K
p
=
7.282
−
8500
T
0
=
7.282
−
8500
T
7.282
=
8500
T
T
=
1167
K
T
=
1167
−
273
=
894
o
C
.
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Similar questions
Q.
In the preparation of
C
a
O
from
C
a
C
O
3
using the equilibrium
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
g
)
K
p
is expressed as
log
K
p
=
7.282
−
8500
T
for the complete decomposition of
C
a
C
O
3
, the temperature in celsius to be used is____________.
Q.
In the preparation of CaO from
C
a
C
O
3
using the equilibrium
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
g
)
K
p
is expressed as log
K
p
=
7.282
−
8500
T
for the complete decomposition of
C
a
C
O
3
, the temperature in Celsius to be used is
Q.
In the preparation of quick lime from limestone, the reaction is:
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
g
)
Experiments carried out between
850
∘
C
and
950
∘
C
led to a set of
K
p
values fitting in empirical equation
l
n
K
p
=
7.282
−
8500
T
, where
T
is the absolute temperature. If the reaction is carried out in quiet air, what minimum temperature would be predicted from this equation for almost complete decomposition of lime?
Q.
When limestone is heated, quicklime is formed according to the equation,
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
s
)
The experiment was carried out in the temperature range
800
−
900
o
C
. Equilibrium constant
K
p
follows the relation,
log
K
p
=
7.282
−
8500
/
T
where,
T
is temperature in Kelvin. At what temperature the decomposition will give
C
O
2
(
g
)
at
1
atm?
Q.
In the preparation of quick lime from lime stone, the reaction is:-
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
g
)
.
Experiments carried out between
850
and
950
led to set of
K
p
values fitting is empirical equation by
ln
K
p
=
7.282
−
8500
T
, where
T
is absolute temperature. If the reaction is carried out in quiet air, minimum temperature would be predicted from this equation for complete decomposition of lime is x K. 100x is_________.
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