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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: emily23 on January 08, 2018, 10:30:38 PM

Title: Alkenes & Alkynes
Post by: emily23 on January 08, 2018, 10:30:38 PM

Stuck on this question:

The boiling point of propane is -44.5C and that of propene is -47.8C.  Is this consistent with the nature of the intermolecular forces present in both these hydrocarbons?  Explain.

Title: Re: Alkenes & Alkynes
Post by: zarhym on January 08, 2018, 10:54:13 PM

There are 4 categories of intermolecular forces.

Ion-induced dipole forces
Ion-dipole forces
Hydrogen bonding
van der Waals forces

propane/propene does not have ions.
propane/propene does not have hydrogen bond donor acceptor, since there is no nitrogen/oxygen/fluorine atom.

Van der Waals forces is the topic you should look into.

Title: Re: Alkenes & Alkynes
Post by: Babcock_Hall on January 09, 2018, 08:49:41 AM

@OP,  It is a forum rule that you provide your thoughts before we can help you.