Consider the following reactions at 25°C: C 6 H 12 O 6 ( a q ) + 6O 2 ( g ) → 6CO 2 ( g ) + 6H 2 O Δ G ° = − 2870 kJ ADP ( a q ) + HPO 4 2 − ( a q ) + 2 H + ( a q ) → ATP ( a q ) + H 2 O Δ G ° = 31 kJ Write an equation for a coupled reaction between glucose, C 6 H 1 2 O 6 , and ADP in which Δ G ° = − 390 kJ .
Consider the following reactions at 25°C: C 6 H 12 O 6 ( a q ) + 6O 2 ( g ) → 6CO 2 ( g ) + 6H 2 O Δ G ° = − 2870 kJ ADP ( a q ) + HPO 4 2 − ( a q ) + 2 H + ( a q ) → ATP ( a q ) + H 2 O Δ G ° = 31 kJ Write an equation for a coupled reaction between glucose, C 6 H 1 2 O 6 , and ADP in which Δ G ° = − 390 kJ .
Solution Summary: The author explains that the chemical equation for a coupled reaction between C_Text6 and ADP with the value -390 kJ needs to be determined.
Consider the following reactions at 25°C:
C
6
H
12
O
6
(
a
q
)
+
6O
2
(
g
)
→
6CO
2
(
g
)
+
6H
2
O
Δ
G
°
=
−
2870
kJ
ADP
(
a
q
)
+
HPO
4
2
−
(
a
q
)
+
2
H
+
(
a
q
)
→
ATP
(
a
q
)
+
H
2
O
Δ
G
°
=
31
kJ
Write an equation for a coupled reaction between glucose, C6H12O6, and ADP in which
Δ
G
°
=
−
390
kJ
.
(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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