Combustion of glucose (C,H,120.) is the main source of energy for animal cells: C,H1,0 6(8) + 60,(8) 6CO2(8) + 6H,0(1) AG (37 °C)=-2872. kJ rxn This energy is generally stored as ATP (adenosine triphosphate) molecules, which can release it when convenient by hydrolysis ("water-assisted decomposition") into ADP (adenosine diphosphate) molecules and a phosphate anion, often given the symbol P; in biochemistry: ATP(aq) · ADP (aq) + P ; (aq) AG =-35 to 70 kJ rxn The actual amount of free energy released by the hydrolysis of ATP varies, depending on the exact conditions inside the cell. Suppose under certain conditions hydrolysis of ATP actually releases - 51.3 kJ/mol. Calculate the maximum number of ATPS that could be created from ADP s and P, by the combustion of a molecule of glucose. Your answer must be a whole number.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Combustion of glucose (
) is the main source of energy for animal cells:
|
C6H12O6
s
+ 6O2
g
→ 6CO2
g
+ 6H2O
l
|
=ΔGrxn37°C−2872.kJ
|
This energy is generally stored as
(adenosine triphosphate) molecules, which can release it when convenient by hydrolysis ("water-assisted decomposition") into
(adenosine diphosphate) molecules and a phosphate anion, often given the symbol
in biochemistry:
|
ATP
aq
→ ADP
aq
+ Pi
aq
|
=ΔGrxn−35 to 70kJ
|
The actual amount of free energy released by the hydrolysis of
varies, depending on the exact conditions inside the cell.
Suppose under certain conditions hydrolysis of
actually releases
. Calculate the maximum number of
s that could be created from
and
by the combustion of a molecule of glucose. Your answer must be a whole number.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
