We discussed in class (several times) how the Boltzmann distribution can be used to relate the relative populations of two states differing in energy by AU. Suppose you are given a vial containing a solution of glucose in water (don't ask why this would happen). For the purpose of this question, glucose exists in one of two conformations-"chair" or "boat"-with an energy difference (AU) of 25.11 kJ mol¹ between them. 1. What would be the proportion of molecules in the "boat" conformation at 310K? 2. Thinking back to our discussion of the individual sources of energy that go into the potential energy calculation for a molecule (e.g. Ubond. Uangles Uelectrostatic, etc), give a plausible explanation of why the "boat" conformation is less stable. HO HOH "Chair" OH "Boat" HO HO H OH HO H OH OH OH H
We discussed in class (several times) how the Boltzmann distribution can be used to relate the relative populations of two states differing in energy by AU. Suppose you are given a vial containing a solution of glucose in water (don't ask why this would happen). For the purpose of this question, glucose exists in one of two conformations-"chair" or "boat"-with an energy difference (AU) of 25.11 kJ mol¹ between them. 1. What would be the proportion of molecules in the "boat" conformation at 310K? 2. Thinking back to our discussion of the individual sources of energy that go into the potential energy calculation for a molecule (e.g. Ubond. Uangles Uelectrostatic, etc), give a plausible explanation of why the "boat" conformation is less stable. HO HOH "Chair" OH "Boat" HO HO H OH HO H OH OH OH H
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter12: Thermodynamic Processes And Thermochemistry
Section: Chapter Questions
Problem 13P
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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:We discussed in class (several times) how the Boltzmann distribution can
be used to relate the relative populations of two states differing in energy
by AU. Suppose you are given a vial containing a solution of glucose in
water (don't ask why this would happen). For the purpose of this question,
glucose exists in one of two conformations-"chair" or "boat"-with an
energy difference (AU) of 25.11 kJ mol1 between them.
1. What would be the proportion of molecules in the "boat"
conformation at 310K?
2. Thinking back to our discussion of the individual sources of energy
that go into the potential energy calculation for a molecule (e.g. Upond
Uangle, Uelectrostatic. etc), give a plausible explanation of why the "boat"
conformation is less stable.
H он
"Chair"
OH
"Вoat"
но
но
но-
HO.
H.
HO.
HO
H.
HO.
OH
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