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2001 - Written Paper - Q5 - HSN forum

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2001 - Written Paper - Q5


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#1 jamiep

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Posted 30 May 2005 - 07:51 PM

Vinyl acetate and hexane have the same relative formula mass. Explain why you would expect vinyl acetate to have higher boiling point than hexan.

This is worth 2 marks. My answer was as follows:

-Vinyl Acetate will have hydrogen bonding which means more energy will be needed to break the bonds

-Vinyl Acetate has 2 double band which are more difficult to break (thus needing more energy) where as hexane is fully saturated.

Do you think this is two marks worth?

#2 dondon

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Posted 30 May 2005 - 07:54 PM

I think so because it wouldn't expect you to write four points for a half mark each coz its a slightly more complicated question

#3 dfx

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Posted 30 May 2005 - 07:55 PM

The marking guide says:

Stronger intermolecular bonds in vinyl acetate due to hexane having can der waal's forces only

OR

vinyl acetate having permanenet dipole interactions.





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