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posted by  Hb on 4/9/2008 4:27:27 PM  |  status: Live  

Types of Forces

Course Textbook Chapter Problem
General Chemistry Chemistry: The Central Science (10th) by Brown, Lemay, Bursten 11 1
Question Details:
C12H26 molecules ar held together by -------
 
a) hydrogen bonding
b) ion-ion interactions
c) ion-dipole interactions
d) dispersion forces
e) dipole-dipole interactions

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posted by Big Willy on 4/9/2008 6:14:39 PM  |  status: Live
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Response Details:
This hydrocarbon has only the basic London dispersion forces (d)

This is because there is no polarity, there will be no dipole-dipole interaction, meaning no hydrogen bonding. 
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posted by thatsme on 4/9/2008 7:07:39 PM  |  status: Live
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Response Details:
since this is a non polar hydrocarbon chain, it can only be held together by dispersion forces.
can't be:
dipole dipole- b/c the electronegativity of carbon and hydrogen is very similar, so there wouldn't be any partial charges.
hydrogen bonding- only used for oxygen hydrogen bonds; no oxygen present
ion dipole- no ions or dipoles present
ion-ion-no ions present
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