The hydrolysis of the sugar sucrose to the sugars glucose and fructose follows a first-order rate equation for the disappearance of sucrose. C 12 H 22 O 11 ( a q ) + H 2 O ( l ) → C 6 H 12 O 6 ( a q ) + C 6 H 12 O 6 ( a q ) Rate = k [ C 12 H 22 O 11 ] In neutral solution, k = 2.1 × 10 − 11 at 27 °C. (As indicated by the rate constant, this is a very slow reaction. In the human body, the rate of this reaction is sped up by a type of catalyst called an enzyme.) (Note: That is not a mistake in the equation—the products of the reaction, glucose and fructose, have the same molecular formulas, C 6 H 12 O 6 , but differ in the arrangement of the atoms in their molecules). The equilibrium constant for the reaction is 1.36 × 10 5 at 27 °C. What are the concentrations of glucose, fructose, and sucrose after a 0.150 M aqueous solution of sucrose has reached equilibrium? Remember that the activity of a solvent (the effective concentration) is 1.
The hydrolysis of the sugar sucrose to the sugars glucose and fructose follows a first-order rate equation for the disappearance of sucrose. C 12 H 22 O 11 ( a q ) + H 2 O ( l ) → C 6 H 12 O 6 ( a q ) + C 6 H 12 O 6 ( a q ) Rate = k [ C 12 H 22 O 11 ] In neutral solution, k = 2.1 × 10 − 11 at 27 °C. (As indicated by the rate constant, this is a very slow reaction. In the human body, the rate of this reaction is sped up by a type of catalyst called an enzyme.) (Note: That is not a mistake in the equation—the products of the reaction, glucose and fructose, have the same molecular formulas, C 6 H 12 O 6 , but differ in the arrangement of the atoms in their molecules). The equilibrium constant for the reaction is 1.36 × 10 5 at 27 °C. What are the concentrations of glucose, fructose, and sucrose after a 0.150 M aqueous solution of sucrose has reached equilibrium? Remember that the activity of a solvent (the effective concentration) is 1.
The hydrolysis of the sugar sucrose to the sugars glucose and fructose follows a first-order rate equation for the disappearance of sucrose.
C
12
H
22
O
11
(
a
q
)
+
H
2
O
(
l
)
→
C
6
H
12
O
6
(
a
q
)
+
C
6
H
12
O
6
(
a
q
)
Rate
=
k
[
C
12
H
22
O
11
]
In neutral solution,
k
=
2.1
×
10
−
11
at 27 °C. (As indicated by the rate constant, this is a very slow reaction. In the human body, the rate of this reaction is sped up by a type of catalyst called an enzyme.) (Note: That is not a mistake in the equation—the products of the reaction, glucose and fructose, have the same molecular formulas,
C
6
H
12
O
6
, but differ in the arrangement of the atoms in their molecules). The equilibrium constant for the reaction is
1.36
×
10
5
at 27 °C. What are the concentrations of glucose, fructose, and sucrose after a 0.150 M aqueous solution of sucrose has reached equilibrium? Remember that the activity of a solvent (the effective concentration) is 1.
Definition Definition Study of the speed of chemical reactions and other factors that affect the rate of reaction. It also extends toward the mechanism involved in the reaction.
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