Experimental Organic Chemistry: A Miniscale & Microscale Approach (Cengage Learning Laboratory Series for Organic Chemistry)
Experimental Organic Chemistry: A Miniscale & Microscale Approach (Cengage Learning Laboratory Series for Organic Chemistry)
6th Edition
ISBN: 9781305080461
Author: John C. Gilbert, Stephen F. Martin
Publisher: Brooks Cole
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Chapter 4.3, Problem 7E
Interpretation Introduction

Interpretation:Higher boiling point of aqueous NaCl solution as compared to that of pure water should be explained with help of Raoult’s law and Dalton’s law.

Concept introduction:Raoult’s law describes relationship between composition of liquid mixture and vapor pressure. This law holds good only for ideal solutions. Mathematical expression of Raoult’s law is as follows:

  PX=PX°NX

Where,

  • PX is partial pressure of component X .
  • PX° is partial pressure of pure component X .
  • NX is mole fraction of component X .

Dalton’s law of partial pressures states that total pressure is defined as sum of partial pressure of all volatile components. Mathematical expression for Dalton’s law is as follows:

  Ptotal=PX+PY+PZ+...

Where,

  • Ptotalis total partial pressure of system.
  • PX is partial pressure of component X .
  • PY is partial pressure of component Y .
  • PZ is partial pressure of component Z .

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Transmitance 3. Which one of the following compounds corresponds to this IR spectrum? Point out the absorption band(s) that helped you decide. OH H3C OH H₂C CH3 H3C CH3 H3C INFRARED SPECTRUM 0.8- 0.6 0.4- 0.2 3000 2000 1000 Wavenumber (cm-1) 4. Consider this compound: H3C On the structure above, label the different types of H's as A, B, C, etc. In table form, list the labeled signals, and for each one state the number of hydrogens, their shifts, and the splitting you would observe for these hydrogens in the ¹H NMR spectrum. Label # of hydrogens splitting Shift (2)
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY