the ionic compound L2O3(s) is the ionic compound formed from oxygen and a metal with the form L(s) at 1.00 bar and 298 K. (a) Draw the Lewis structure for L2O3. Assume that all the valence electrons from L are required. (b) Use the following information to determine the enthalpy of formation for L2O3(s). Express your answer in kJZ(mol L2O3(s)). Lattice energy for L2O3(s) = -14836 kJ mol1 AHsub for L(s) = 358 kJ mol 1 First ionization energy for L(g) = 577 kJ mol 1 Second ionization energy for L(g) = 1794 kJ mol 1 Third ionization energy for L(g) = 3820 kJ mol 1 Bond dissociation energy for O2(g) = 498 kJ mol 1 %3D First electron affinity for O = -141 kJ mol 1 Second electron affinity for O = 744 kJ mol 1
the ionic compound L2O3(s) is the ionic compound formed from oxygen and a metal with the form L(s) at 1.00 bar and 298 K. (a) Draw the Lewis structure for L2O3. Assume that all the valence electrons from L are required. (b) Use the following information to determine the enthalpy of formation for L2O3(s). Express your answer in kJZ(mol L2O3(s)). Lattice energy for L2O3(s) = -14836 kJ mol1 AHsub for L(s) = 358 kJ mol 1 First ionization energy for L(g) = 577 kJ mol 1 Second ionization energy for L(g) = 1794 kJ mol 1 Third ionization energy for L(g) = 3820 kJ mol 1 Bond dissociation energy for O2(g) = 498 kJ mol 1 %3D First electron affinity for O = -141 kJ mol 1 Second electron affinity for O = 744 kJ mol 1
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
Section: Chapter Questions
Problem 5.108QE
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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:the ionic compound L2O3(s) is the ionic compound formed from oxygen and a metal
with the form L(s) at 1.00 bar and 298 K.
(a) Draw the Lewis structure for L2O3. Assume that all the valence electrons from L
are required.
(b) Use the following information to determine the enthalpy of formation for
L2O3(s). Express your answer in kJZ(mol L2O3(s)).
Lattice energy for L2O3(s) = -14836 kJ mol1
AHsub for L(s) = 358 kJ mol 1
First ionization energy for L(g) = 577 kJ mol 1
Second ionization energy for L(g) = 1794 kJ mol 1
Third ionization energy for L(g) = 3820 kJ mol 1
Bond dissociation energy for O2(g) = 498 kJ mol 1
%3D
First electron affinity for O = -141 kJ mol 1
Second electron affinity for O = 744 kJ mol 1
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