Chemical Kinetics Worksheet With Answers By Prof. Abdullah M. Asiri - 2009 Page 25
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33August 16, 2009
[PROBLEM SET FROM R. CHANG TEST
BANK]
85. What is the rate law that corresponds to the data shown for the reaction 2A + B → C?
86. The rate constant for a certain first-order reaction is 0.40/min. What is the initial rate in mole/L·min, if the
initial concentration of the compound involved is 0.50 mol/L?
87. Sucrose, C
H
O
, reacts slowly with water in the presence of an acid to form two other sugars, glucose
12
22
11
and fructose, both of which have the same molecular formulas, but different structures.
O → C
C
H
O
+ H
H
O
(glucose) + C
H
O
(fructose)
12
22
11
2
6
12
6
6
12
6
The reaction is first order and has a rate constant of 6.2 × 10
-5
+
/s at 35°C when the H
concentration is 0.10
M. Suppose that the initial concentration of sucrose in the solution is 0.40 M. What will the sucrose
concentration be after 2.0 hours?
88. Sucrose, C
H
O
, reacts slowly with water in the presence of an acid to form two other sugars, glucose
12
22
11
and fructose, both of which have the same molecular formulas, but different structures.
O → C
C
H
O
+ H
H
O
(glucose) + C
H
O
(fructose)
12
22
11
2
6
12
6
6
12
6
The reaction is first order and has a rate constant of 6.2 × 10
-5
+
/s at 35°C when the H
concentration is 0.10
M. Suppose that the initial concentration of sucrose in the solution is 0.40 M. How many minutes will it
take for the sucrose concentration to drop to 0.30 M?
25
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