Structure and molecular properties
This presentation is the property of its rightful owner.
Sponsored Links
1 / 13

Structure and Molecular Properties PowerPoint PPT Presentation


  • 57 Views
  • Uploaded on
  • Presentation posted in: General

Structure and Molecular Properties. Summer 2012. Overview. Syllabus ChemDraw Structures and intermolecular forces. Intermolecular Forces and Physical Properties. Virtual ChemBook , Elmhurst College. Solvents and Boiling Points. Boiling Point Trend: Mass. Intermolecular Forces.

Download Presentation

Structure and Molecular Properties

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Structure and molecular properties

Structureand Molecular Properties

Summer 2012


Overview

Overview

  • Syllabus

  • ChemDraw

  • Structures and intermolecular forces


Intermolecular forces and physical properties

Intermolecular Forces and Physical Properties

  • Virtual ChemBook, Elmhurst College


Solvents and boiling points

Solvents and Boiling Points


Boiling point trend mass

Boiling Point Trend: Mass


Intermolecular forces

Intermolecular Forces

  • Hydrogen bonding

    • Acceptor/donor

  • Dipole/dipole

  • Dipole/induced dipole

  • Induced dipole/induced dipole

    • Also called London dispersion forces

VDWs Forces


H bond donor acceptor neither or both

H-Bond Donor, Acceptor, Neither, or Both


Polar protic polar aprotic nonpolar

Polar Protic, Polar Aprotic, Nonpolar


London forces in nonpolar solvents

London Forces in Nonpolar Solvents


General principles

General Principles

  • If molecules are about the same mass

    • H-bonding > Dipole-dipole > Induced dipole

  • Induced dipole is weakest interaction, but as surface area increases, cumulative effect can overcome stronger IMF

  • Strategy for predicting relative boiling points


Solubility

Solubility

  • “Like dissolves like”

  • Based on IMF


Miscibility and density

Miscibility and Density

  • Miscibility spectrum

  • Density

    • Organics (0.7 g/mL)

    • Aqueous (1.0 g/mL)

    • Halogenated (1.3 g.mL)


Miscibility with water

Miscibility with Water


  • Login