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Chemical Kinetics
Short Answer Type
11.
A reaction is 50% complete in 2 hours and 75% complete in 4 hours. What is the order of the reaction.
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12.
The rate of reaction X → Y becomes 8 times when the concentration of the reactant X is doubled. Write the rate law of the reaction.
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13.
State any one condition under which a bimolecular reaction may be kinetically of first order?
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14.
The rate law for the decomposition of N
2
O
5
is rate = k[N
2
O
5
]. What is the significance of k in this equation?
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15.
Define activation energy of a reaction.
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16.
Why is it that the instantaneous rate of reaction does not change when a part of the reacting solution is taken out?
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17.
Express the rate of reaction in terms of concentration of reactants and products for the reaction.
2
N
2
O
5
(
g
)
→
4
NO
2
(
g
)
+
O
2
(
g
)
167 Views
18.
For the hypothetical reaction:
A
2
+
2
B
2
→
2
AB
2
,
write the rate equation in terms of the disappearance of B
2
and formation of AB
2.
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19.
Express the relationship between the rate of production of water and the rate of disappearance of oxygen in the following reaction:
C
2
H
6
(
g
)
+
7
2
O
2
(
g
)
→
2
CO
2
(
g
)
+
3
H
2
O
(
l
)
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20.
If the concentration is expressed in mol per litre and time in minutes, then write the units for the rate constant for n-th order reaction.
The units of rate constant for the nth order reaction equal to (mol L
–1
)
1 – n
min
–1
.
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