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Chemical Kinetics
Short Answer Type
131.
Identify, giving reasons, the faster reaction in the following:
2
Na
(
s
)
+
I
2
(
s
)
→
2
Nal
(
s
)
2
Na
(
s
)
+
I
2
(
g
)
→
2
Nal
(
s
)
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132.
Identify, giving reasons, the faster reaction in the following:
C
(
s
)
+
2
H
2
O
(
g
)
→
2
H
2
(
g
)
+
CO
2
(
g
)
C
(
s
)
+
2
H
2
O
(
s
)
→
Catalyst
2
H
2
(
g
)
+
CO
2
(
g
)
C
(
s
)
+
2
H
2
O
(
s
)
→
Catalyst
2
H
2
(
g
)
+
CO
2
(
g
)
The reaction carried in the presence of catalyst is fast because in the catalysed reaction the activation energy needed is less as compared to the uncatalysed reaction.
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133.
Identify, giving reasons, the faster reaction in
the following:
C
(
s
)
+
1
/
2
O
2
(
g
)
→
500
°
CO
(
g
)
C
(
s
)
+
1
/
2
O
2
(
g
)
→
1000
°
CO
(
g
)
121 Views
134.
Identify, giving reasons, the faster reaction in the following:
N
2
(
10
atm
)
+
3
H
2
(
10
atm
)
→
2
NH
3
(
g
)
N
2
(
5
atm
)
+
3
H
2
(
5
atm
)
→
2
NH
3
(
g
)
131 Views
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135.
What is the difference between order and molecularity of a reaction?
871 Views
Long Answer Type
136.
What are Pseudo chemical reaction? Give examples.
558 Views
Short Answer Type
137.
A reaction is first order in A and second order in B.
(i) Write differential rate equation.
(ii) How is the rate affected if the concentration of B is tripled?
(iii) How is the rate affected when the concentrations of both A and B are doubled?
What is the significance of rate constant in the rate expression?
120 Views
138.
Following reaction takes place in one step:
2
NO
(
g
)
+
O
2
(
g
)
⇋
2
NO
2
(
g
)
How will the rate of the above reaction change if the volume of the reaction vessel is diminished to one third of its original volume? Will there be any change in the order of the reaction with the reduced volume ?
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139.
Two similar reactions have the same rate constant at 25°C, but at 35°C one of the reaction has a higher rate constant than the other. Account for these observations.
129 Views
Long Answer Type
140.
How will you verify whether a reaction is first order or not?
129 Views
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