Kinetics - Extra Practice Problems Worksheet With Answer Key - General Chemistry Ii Page 12
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46. The energy needed for a reaction to proceed from reactants to products is called __________
a.
collision energy.
d.
potential energy.
b.
kinetic energy.
e.
thermodynamic energy.
c.
activation energy.
47. For the reaction diagram shown, which of the following statements is true?
B
W
Energy
X
A
Z
Y
C
Extent of Reaction
a.
Line W represents the ∆H for the forward reaction; point B represents the transition state
b.
Line W represents the activation energy for the forward reaction; point B represents the transition state
c.
Line Y represents the activation energy for the forward reaction; point C represents the transition state
d.
Line X represents the ∆H for the forward reaction; point B represents the transition state
Reaction Mechanisms, Intermediates…
48. A proposed mechanism for the photodecomposition of ozone in the atmosphere is
Step 1: O
(g) + h ν → O
(g) + O(g)
3
2
Step 2: O
(g) + O(g) → 2 O
(g)
3
2
Which of the following species is an intermediate?
a.
O
d.
O
3
b.
e.
This mechanism has no intermediates.
h ν
c.
O
2
49. A proposed mechanism for the decomposition of ozone in the atmosphere is
Step 1: Cl(g) + O
(g) → ClO(g) + O
(g)
3
2
Step 2: ClO(g) + O
(g) → Cl(g) + 2 O
(g)
3
2
Which of the following species is an intermediate?
a.
Cl
d.
O
2
b.
O
e.
This mechanism has no intermediates.
3
c.
ClO
50. The reaction NO
(g) + CO(g) → NO(g) + CO
(g) is thought to occur by the following mechanism:
2
2
Step 1: NO
(g) + NO
(g) → NO
(g) + NO(g)
2
2
3
Step 2: NO
(g) + CO(g) → NO
(g) + CO
(g)
3
2
2
Which of the following species is an intermediate?
a.
NO
d.
CO
2
2
b.
NO
e.
This mechanism has no intermediates.
c.
NO
3
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