Given thatAH; [H(g) = 218.0 kJ-mol-!%3DAH; C(g)] = 716.7 kJ-mol-!AH; [CH,(g)] = -74.6 kJ-mol¬1calculate the average molar bond enthalpy of the carbon–hydrogen bond in a CH, molecule.AHC-H =kJ-mol-Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry Publisher: University Science BooksA stvMacBook Air80888DIIDDF3F4F5F6F7F8F9F10F11F12

The detailed solution of your question given below-- Since, we know that the bond enthalpy is the…

Given that AH; H(g)] = 218.0 kJ-mol- %3D AH; C(g)] = 716.7 kJ-mol¬1 %3D AH; (CH,(g)] = -74.6 kJ•mol¬! %3D calculate the average molar bond enthalpy of the carbon–hydrogen bond in a CH, molecule.

Given that AH; H(g)] = 218.0 kJ-mol- %3D AH; C(g)] = 716.7 kJ-mol¬1 %3D AH; (CH,(g)] = -74.6 kJ•mol¬! %3D calculate the average molar bond enthalpy of the carbon–hydrogen bond in a CH, molecule.

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

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Concept explainers

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

Given that
AH; [H(g) = 218.0 kJ-mol-!
%3D
AH; C(g)] = 716.7 kJ-mol-!
AH; [CH,(g)] = -74.6 kJ-mol¬1
calculate the average molar bond enthalpy of the carbon–hydrogen bond in a CH, molecule.
AHC-H =
kJ-mol-
Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry Publisher: University Science Books
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