The reaction for the metabolism of sucrose, C12H22011, is the same as for its combustion in oxygen to yield CO2(g) and H20(1). The standard heat of formation of sucrose is -2230 kJ mol-1. Use the data in the table below to compute the amount of energy (in kJ) released by metabolizing 2.73 oz (77.3 g) of sucrose. Standard Enthalpies of Formation of Typical Substances AH; (KI mol-) AH; (K) mot-) Substance Substance CG) (graphite) CO(g) (3)O°H H,O) -241.8 -110.5 -285.9 -393.5 H,O,() -187.6 CH(g) HBr(g) HCI(g) HI(g) HNO,() -74.848 -36 CH,A(g) -82.0 -92.30 14.2 26.6 CH,OH() CO(NH),() (urea) CO(NH);(ag) -238.6 -173.2 -333.19 H,SO,4) -811.32 -391.2 HC,H,0,() O(g) -487.0 226.75 Pb(s) PbO(s) 52.284 CH.g) -84.667 -219.2 SG) CH,OH() H2(g) -277.63 -296.9 so,) -395.2 i ! kJ
The reaction for the metabolism of sucrose, C12H22011, is the same as for its combustion in oxygen to yield CO2(g) and H20(1). The standard heat of formation of sucrose is -2230 kJ mol-1. Use the data in the table below to compute the amount of energy (in kJ) released by metabolizing 2.73 oz (77.3 g) of sucrose. Standard Enthalpies of Formation of Typical Substances AH; (KI mol-) AH; (K) mot-) Substance Substance CG) (graphite) CO(g) (3)O°H H,O) -241.8 -110.5 -285.9 -393.5 H,O,() -187.6 CH(g) HBr(g) HCI(g) HI(g) HNO,() -74.848 -36 CH,A(g) -82.0 -92.30 14.2 26.6 CH,OH() CO(NH),() (urea) CO(NH);(ag) -238.6 -173.2 -333.19 H,SO,4) -811.32 -391.2 HC,H,0,() O(g) -487.0 226.75 Pb(s) PbO(s) 52.284 CH.g) -84.667 -219.2 SG) CH,OH() H2(g) -277.63 -296.9 so,) -395.2 i ! kJ
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
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Problem 5.85QE: The octane number of gasoline is based on a comparison of the gasolines behavior with that of...
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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.
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Transcribed Image Text:The reaction for the metabolism of sucrose, C12H22011, is the same as for its combustion in oxygen to yield CO2(g) and H20(1). The
standard heat of formation of sucrose is -2230 kJ mol-1. Use the data in the table below to compute the amount of energy (in kJ)
released by metabolizing 2.73 oz (77.3 g) of sucrose.
Standard Enthalpies of Formation of Typical Substances
AH; (KI mol-')
Substance
Substance
AH (K) mol-)
CG) (graphite)
CO(g)
Co.()
H,O(g)
-241.8
-110.5
H,O)
-285.9
-393.5
-187.6
CH(g)
-74.848
HBr(g)
-36
CH,CI(g)
-82.0
HCI(g)
-92.30
CHIg)
CH,OH()
14.2
HI(g)
26.6
-238.6
HNO,()
-173.2
CO(NH),(6) (urea)
-333.19
H,SO,()
-811.32
HC,H,0,)
0,(g)
-391.2
-487.0
CH,(g)
CH(g)
CH(g)
226.75
52.284
Pb(s)
-84.667
PbO(s)
-219.2
CH,OH()
-277.63
H2(g)
-296.9
So,(g)
-395.2
kJ
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