Part A In chemical reactions, heat is converted into chemical energy (the potential energy stored in chemical bonds) or vice versa. Bond energy is the energy required to break one mole of the bond in the gas phase. Since it takes energy to break a bond, bond energies are always positive. Conversely, energy is released when bonds are formed. Thus, the enthalpy change for a reaction can be approximated from Calculate the bond energy for breaking 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) Δ.ΗΣ(ΔΗ breaking) + Σ(ΔΗ forming) HA where H represents bond energies for the breaking (positive bond energy) or forming (negative bond energy) of a bond and H; represents the overall enthalpy for the reaction. ? AHCH, = Value Units Use the table to answer questions about bond energies. Bond energy Bond (kJ mol-1) C-C 347 C=C 611 C-H 414 C-O 360 Calculate the bond energy for breaking all the bonds in a mole of O2 molecules? C-O 799 Express your answer to three significant figures and include the appropriate units. 142 • View Available Hint(s) O-0 498 HO 464 HA ΔΗo, - Value Units Submit

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 79QAP: Which statement(s) is/are true about bond enthalpy? (a) The bond energy for a triple bond between A...
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Please answer both questions as they are calculated together but just a heads up they are different questions. Thank you for helping me

Part A
In chemical reactions, heat is converted into chemical energy (the
potential energy stored in chemical bonds) or vice versa. Bond
energy is the energy required to break one mole of the bond in the
gas phase. Since it takes energy to break a bond, bond energies
are always positive. Conversely, energy is released when bonds
are formed. Thus, the enthalpy change for a reaction can be
approximated from
Calculate the bond energy for breaking 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)
Δ.ΗΣ(ΔΗ breaking) + Σ(ΔΗ formin g)
HA
?
where H represents bond energies for the breaking (positive
bond energy) or forming (negative bond energy) of a bond and
H, represents the overall enthalpy for the reaction.
AHCH,
Value
Units
%3D
Use the table to answer questions about bond energies.
Bond energy
Bond
(kJ mol-1)
C-C
347
C=C
611
C-H
414
C-O
360
Calculate the bond energy for breaking all the bonds in a mole of O2 molecules?
C=0
799
Express your answer to three significant figures and include the appropriate units.
O-0
142
• View Available Hint(s)
O=0
498
HO
464
HA
?
AHo, =
Value
Units
Submit
Transcribed Image Text:Part A In chemical reactions, heat is converted into chemical energy (the potential energy stored in chemical bonds) or vice versa. Bond energy is the energy required to break one mole of the bond in the gas phase. Since it takes energy to break a bond, bond energies are always positive. Conversely, energy is released when bonds are formed. Thus, the enthalpy change for a reaction can be approximated from Calculate the bond energy for breaking 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) Δ.ΗΣ(ΔΗ breaking) + Σ(ΔΗ formin g) HA ? where H represents bond energies for the breaking (positive bond energy) or forming (negative bond energy) of a bond and H, represents the overall enthalpy for the reaction. AHCH, Value Units %3D Use the table to answer questions about bond energies. Bond energy Bond (kJ mol-1) C-C 347 C=C 611 C-H 414 C-O 360 Calculate the bond energy for breaking all the bonds in a mole of O2 molecules? C=0 799 Express your answer to three significant figures and include the appropriate units. O-0 142 • View Available Hint(s) O=0 498 HO 464 HA ? AHo, = Value Units Submit
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