Chemical Kinetics Worksheet With Answers By Prof. Abdullah M. Asiri - 2009 Page 13
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33August 16, 2009
[PROBLEM SET FROM R. CHANG TEST
BANK]
-(Ea/RT)
45. The Arrhenius equation is k = A e
. The slope of a plot of ln k vs. 1/T is equal to
A.
-k.
B.
k.
C.
E
.
a
D.
-E
/R.
a
E.
A.
46. What is the slope of an Arrhenius plot for the following reaction?
2NOCl → 2NO + Cl
2
8.18 × 10
-2
A.
K
5.06 × 10
-2
B.
K
-1.22 × 10
4
C.
K
-1.96 × 10
4
D.
K
E.
not enough information to calculate the slope
CO → CH
47. The activation energy for the reaction CH
+ CO is 71 kJ/mol. How many times greater is the
3
3
rate constant for this reaction at 170°C than at 150°C?
A.
0.40
B.
1.1
C.
2.5
D.
4.0
E.
5.0
48. If E
for a certain biological reaction is 50. kJ/mol, by what factor (how many times will the rate of this
a
reaction increase when body temperature increases from 37°C (normal) to 40°C (fever)?
A.
1.15
B.
1.20
2.0 × 10
5
C.
D.
1.0002
E.
2.0
13
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