Carbonic anhydrase, an enzyme whose substrate is CO 2 , has a K of 12 mM . When the concentration of CO 2 is 1 .4 × 10 − 4 M , the rate of reaction between carbonic anhydrase and CO 2 is 2 .72 × 10 − 7 mol / s , and when the concentration of CO 2 is 2 .2 × 10 − 4 M , the rate is 4 .03 × 10 − 7 mol / s . If the reaction follows Michaelis-Menten kinetics, what is V for this reaction?
Carbonic anhydrase, an enzyme whose substrate is CO 2 , has a K of 12 mM . When the concentration of CO 2 is 1 .4 × 10 − 4 M , the rate of reaction between carbonic anhydrase and CO 2 is 2 .72 × 10 − 7 mol / s , and when the concentration of CO 2 is 2 .2 × 10 − 4 M , the rate is 4 .03 × 10 − 7 mol / s . If the reaction follows Michaelis-Menten kinetics, what is V for this reaction?
Solution Summary: The author explains the Michaelis-Menten kinetics by the expression as shown below.
Carbonic anhydrase, an enzyme whose substrate is
CO
2
, has a
K
of
12
mM
. When the concentration of
CO
2
is
1
.4
×
10
−
4
M
, the rate of reaction between carbonic anhydrase and
CO
2
is
2
.72
×
10
−
7
mol
/
s
, and when the concentration of
CO
2
is
2
.2
×
10
−
4
M
, the rate is
4
.03
×
10
−
7
mol
/
s
. If the reaction follows Michaelis-Menten kinetics, what is
V
for this reaction?
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.
(c) The following data have been obtained for the hydrolysis of sucrose, C12H22O11, to
glucose, C6H12O6, and fructose C6H12O6, in acidic solution:
C12H22O11 + H2O → C6H12O6 + C6H12O6
[sucrose]/mol dm³
t/min
0
0.316
14
0.300
39
0.274
60
0.256
80
0.238
110
0.211
(i) Graphically prove the order of the reaction and determine the rate constant of the
reaction.
(ii) Determine the half-life, t½ for the hydrolysis of sucrose.
(III) adsorbent
(b) Adsorption of the hexacyanoferrate (III) ion, [Fe(CN)6] ³, on y-Al2O3 from aqueous
solution was examined. The adsorption was modelled using a modified Langmuir
isotherm, yielding the following values of Kat pH = 6.5:
(ii)
T/K
10-10 K
280
2.505
295
1.819
310
1.364
325
1.050
Determine the enthalpy of adsorption, AadsHⓇ.
If the reported value of entropy of adsorption, Aads Se = 146 J K-1 mol-1 under the above
conditions, determine Aads Gº.
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