Suu Posted January 30, 2014 Report Share Posted January 30, 2014 Hello, I need you guys' help ;(CH2CH2OHCH3OHCH3CH2CH2OHCH3CH2CH2CH3H2OI have to identify intermolecular forces of above 5 molecules. I obtained an electronic device which is called LabQuest and temperature probe. How can I identify intermolecular forces by using temperature probe?Oh, in addition, my teacher didn't recommend me to boil solutions of those 5 molecules. Reply Link to post Share on other sites More sharing options...
sameera95 Posted January 30, 2014 Report Share Posted January 30, 2014 the substances you are using will evaporate so quickly you won't have the chance to heat them up and the alcohols are flammable so it will be dangerous. why are you doing this anyway? the only intermolecular forces that we need to know are van der waals, dipole-dipole & H bonding. CH2CH2OH - VDW and H bondingCH3OH - VDW and H bondingCH3CH2CH2OH - VDW and H bondingCH3CH2CH2CH3 - VDW onlyH2O - VDW and H bondingI hope this helps 1 Reply Link to post Share on other sites More sharing options...
Suu Posted January 30, 2014 Author Report Share Posted January 30, 2014 Oh, I'm studying about the intermolecular force these days, and I should design this lab to identify intermolecular forces. Only purpose was given.Purpose: to identify the intermolecular forces.How can I identify by using temperature probe? Reply Link to post Share on other sites More sharing options...
sameera95 Posted January 30, 2014 Report Share Posted January 30, 2014 I'm sorry but I'm not sure about how you're supposed to identify bonds using a temperature probe. Sorry! 1 Reply Link to post Share on other sites More sharing options...
Ayumi Posted January 31, 2014 Report Share Posted January 31, 2014 I think you would just heat up the different chemicals and with your temperature probe and a stop watch you find out which chemical heats up the fastest? This would be looking at the volatility of the chemicals and the slower the increase in temperature indicates that it has stronger intermolecular forces. btw i think the order of volatility would beCH3CH2CH2CH3 > CH3OH > CH2CH2OH > CH3CH2CH2OH > H2O Reply Link to post Share on other sites More sharing options...
Suu Posted February 3, 2014 Author Report Share Posted February 3, 2014 Oh? that sounds great, but heating up is not recommended. Even though I heat up those 5 solutions, it is so dangerous because the alcohol is flammable.I have a better idea. What about using the evaporation? Putting the temperature probe into a chemical solution, then evaporation occurs when the probe is removed from the chemical. Reply Link to post Share on other sites More sharing options...
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