Calculate the bond dissociation energy for the breaking of all the bonds in a mole of methane, CH4 . Express your answer to four significant figures and include the appropriate units. » View Available Hint(s) 123+ DCH = Value Units Submit Part B What is the bond dissociation energy for breaking all the bonds in a mole of O2 molecules? Express your answer to three significant figures and include the appropriate units. » View Available Hint(s) 1234 DO = Value Units Submit Part C Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules Express your answer as an integer and include the appropriate units. » View Available Hint(s) 123+ DH.0 = Value Units Submit Part D Calculate the bond dissociation energy needed to break all the bonds in a mole of carbon dioxide, CO2 Express your answer as an integer and include the appropriate units.
Calculate the bond dissociation energy for the breaking of all the bonds in a mole of methane, CH4 . Express your answer to four significant figures and include the appropriate units. » View Available Hint(s) 123+ DCH = Value Units Submit Part B What is the bond dissociation energy for breaking all the bonds in a mole of O2 molecules? Express your answer to three significant figures and include the appropriate units. » View Available Hint(s) 1234 DO = Value Units Submit Part C Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules Express your answer as an integer and include the appropriate units. » View Available Hint(s) 123+ DH.0 = Value Units Submit Part D Calculate the bond dissociation energy needed to break all the bonds in a mole of carbon dioxide, CO2 Express your answer as an integer and include the appropriate units.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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.
Question
Transcribed Image Text:Calculate the bond dissociation energy for the breaking of all the bonds in a mole of methane, CH4 .
Express your answer to four significant figures and include the appropriate units.
In chemical reactions, heat is converted into chemical energy (the potential energy stored in
chemical bonds) or vice versa. Thus, enthalpy change for a reaction can be approximated from
AH° = D(reactants) – D(products)
• View Available Hint(s)
where D represents bond dissociation energies of the reactants and products, respectively.
(3 ED 1?
123+
The table below contains the bond dissociation energies for common bonds. The information can
be used to calculate the energy needed to break all the bonds in a given molecule.
Value
Units
DCH =
Dissociation energy
Bond
(kJ/mol )
Submit
C-C
350
C=C
611
Part B
CH
410
C-O
350
What is the bond dissociation energy for breaking all the bonds in a mole of O2 molecules?
C-O
732
Express your answer to three significant figures and include the appropriate units.
180
• View Available Hint(s)
O-O
498
HO
460
图画 ?
123+
DO =
Value
Units
Submit
• Part C
Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules, H20 .
Express your answer as an integer and include the appropriate units.
• View Available Hint(s)
ở (3 ED ?
123+
DH,0 =
Value
Units
Submit
Part D
Calculate the bond dissociation energy needed to break all the bonds in a mole of carbon dioxide, CO2.
Express your answer as an integer and include the appropriate units.
• View Available Hint(s)
A (3 ED ?
123+
DCO =
Value
Units
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