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Paper details:Part I

Estimate the energy contribution of

dipole-dipole,
London dispersion and
hydrogen bonding forces
by comparing the heat of vaporization per mole of between pairs of molecules selected from the following compounds. Scroll down to the table to find heat of vaporization data.

Pentane
C5H12
http://webbook.nist.gov/cgi/cbook.cgi Name=pentane&Units=SI&cTP=on

Butanal
C4H8O
http://webbook.nist.gov/cgi/cbook.cgi Name=butyraldehyde&Units=SI&cTP=on

1-Bromobutane
C4H9Br
http://webbook.nist.gov/cgi/cbook.cgi Name=butylbromide&Units=SI&cTP=on

1-Iodobutane
C4H9I
http://webbook.nist.gov/cgi/cbook.cgi Name=1-iodobutane&Units=SI&cTP=on

1-Butanol
C4H10O
http://webbook.nist.gov/cgi/cbook.cgi Name=butanol&Units=SI&cTP=on

1,3-Dibromopropane
C3H6Br2
http://webbook.nist.gov/cgi/cbook.cgi Name=1%2C3-dibromopropane&Units=SI&cTP=on

1,3-propanediol
C3H8O2
http://webbook.nist.gov/cgi/cbook.cgi Name=1%2C3-propanediol&Units=SI&cTP=on

Part II

Search for additional thermodynamic data by searching by chemical name at this website and checking the “Phase change” box
http://webbook.nist.gov/chemistry/name-ser.html

These molecules were chosen for the following criteria

Similar number of heavy atoms (non-hydrogen atoms)
Relatively low molecular flexibility
Discuss what intermolecular forces are expected differ between each pair of molecules that you are comparing.
How do your calculations compare to the energy ranges listed in this table

Approximate energies of intermolecular forces

http://www.pearsoncustom.com/mct-comprehensive/asset.php isbn=1269879944&id=13078

SLP Assignment Expectations
Organize your assignment under the headings Part I and Part II. Address each numbered question using your etext reading and the provided links as references. Submit as a Word document or pdf file into your SLP drop box

 

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