Heat Capacity of Ethane: 2011 Final Question 1C

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lia sepanek
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Heat Capacity of Ethane: 2011 Final Question 1C

Postby lia sepanek » Wed Mar 11, 2015 8:43 pm

why does ethane have a higher heat capacity than ethene?

Niharika Reddy 1D
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Re: Heat capacity of ethane: 2011 Final 1C

Postby Niharika Reddy 1D » Wed Mar 11, 2015 9:05 pm

Heat capacity increases with molecular complexity. As more atoms are present in a molecule, there are more possible bond vibrations that can absorb added energy. In addition to having more atoms, ethane has a C-C single bond, which allows it to have rotational freedom, whereas ethene has a C-C double bond that makes it more rigid since double bonds don't allow rotation.

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Re: Heat capacity of ethane: 2011 Final 1C

Postby Chem_Mod » Wed Mar 11, 2015 9:49 pm

Great explanation Niharika!


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