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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James ISBN: 9780198769866 2042

Solution for problem E11C.7(a) Chapter 11C

Atkins' Physical Chemistry | 11th Edition

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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James

Atkins' Physical Chemistry | 11th Edition

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Problem E11C.7(a)

The first five vibrational energy levels of HCl are at 1481.86, 4367.50, 7149.04, 9826.48, and 12 399.8 \(\mathrm{cm}^{-1}\). Calculate the dissociation energy of the molecule in reciprocal centimetres and electronvolts.

Text Transcription:

cm^-1

Step-by-Step Solution:
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C127 Lecture 12 Notes- Aspirin 4-14-16  Essentially: salicylic acid + acetic anhydride + heat = acetylsalicylic acid  Decomposes into acetic acid and salicylic acid over time  Learning Goals o Use qualitative test to assess purity of a sample o Use melting point determinations to assess purity of a sample o Use Thin Layer Chromatography to assess purity of a sample  Safety o All liquid/solid waste should go in waste bottle o Dispose of all glass in broken glass bucket o Make sure melting point apparatus turned off at end  Melting Point o Every chemical compound has unique point o Intermolecular forces between molecules in crystal lattice control melting point o Impurities weaken intermolecular forces and lower melting point o Can identify and assess purity of a compound  Salicylic acid has different melting point than aspirin- if measured value closer to salicylic’s melting point than aspirin’s, substance decomposed badly  Temperature at melting point identifies compound present  Size of temperature range over which melting occurs tells about purity of sample- broader range less pure, smaller range (2-3℃) higher purity  When given expected melting point, melting should occur within the 2-3℃ range of that value o Ex. Made-up value for to show comparison:

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Chapter 11C, Problem E11C.7(a) is Solved
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Textbook: Atkins' Physical Chemistry
Edition: 11
Author: Atkins, Peter; De Paula, Julio; Keeler, James
ISBN: 9780198769866

This textbook survival guide was created for the textbook: Atkins' Physical Chemistry, edition: 11. The full step-by-step solution to problem: E11C.7(a) from chapter: 11C was answered by Aimee Notetaker, our top Chemistry solution expert on 04/25/22, 03:45PM. Since the solution to E11C.7(a) from 11C chapter was answered, more than 204 students have viewed the full step-by-step answer. Atkins' Physical Chemistry was written by Aimee Notetaker and is associated to the ISBN: 9780198769866. The answer to “?The first five vibrational energy levels of HCl are at 1481.86, 4367.50, 7149.04, 9826.48, and 12 399.8 \(\mathrm{cm}^{-1}\). Calculate the dissociation energy of the molecule in reciprocal centimetres and electronvolts.Text Transcription:cm^-1” is broken down into a number of easy to follow steps, and 31 words. This full solution covers the following key subjects: . This expansive textbook survival guide covers 327 chapters, and 1120 solutions.

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