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Get Full Access to Atkins' Physical Chemistry - 11 Edition - Chapter 13e - Problem E13e.7(b)
Get Full Access to Atkins' Physical Chemistry - 11 Edition - Chapter 13e - Problem E13e.7(b)

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ISBN: 9780198769866 2042

## Solution for problem E13E.7(b) Chapter 13E

Atkins' Physical Chemistry | 11th Edition

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Problem E13E.7(b)

Calculate the rotational partition function of $$\mathrm{SO}_{2}$$ at 298 K from its rotational constants $$2.02736 \mathrm{~cm}^{-1}$$, $$0.34417 \mathrm{~cm}^{-1}$$, and $$0.293535 \mathrm{~cm}^{-1}$$ and use your result to calculate the rotational contribution to the molar entropy of sulfur dioxide at $$25^{\circ} \mathrm{C}$$.

Text Transcription:

SO_2

2.02736 cm^-1

0.34417 cm^-1

0.293535 cm^-1

25^circ C

Step-by-Step Solution:
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CHE 112 Notes Week of February 11, 2018 Inter- vs. Intramolecular Forces Intermolecular forces are the forces that are attractive between molecules  “Measure” of: o Boiling Pt. o Melting Pt. o ∆ Hvap o ∆ H fus o ∆ H¿ Intramolecular holds atoms together in a molecule Dipole-Dipole Forces These are intermolecular forces, but between polar molecules.  Solid: Particles arranged by charges. The positive side is closest to the negative side of the molecule next to it. All molecules in a row are in the same direction.  No ions Ion-Dipole Forces  Between polar molecules and ions  Not polarizable Ion-Induced dipole  Temporary  Polarizable Hydrogen Bond This bond consists of a hydrogen atom bonded to an oxygen, fluorine, or nitrogen atom.  Intermolecular Hydrogen Bond is an attraction between the Hydrogen of one atom and the oxygen, fluorine, or nitrogen atom of another molecule.  These bonds have a much higher boiling point than Hydrogen paired with other atoms in the same group.  No ions Polarizability and Induced Dipoles A nearby cloud of an atom can distort the electron cloud of another atom, ion, or molecule.  If nonpolar, a temporary dipole moment is created.  If polar, it enhances the existing dipole moment. Polarizability is how easy the electron cloud can be distorted.  Increases down a group due to the atomic size increasi

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