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monoatomic, diatomic, linear, non-linear

Posted: Sun Feb 09, 2020 4:13 am
by Jorja De Jesus 2C
Are these referring to the shape of a molecule? If so why does the shape affect entropy?

Re: monoatomic, diatomic, linear, non-linear

Posted: Sun Feb 09, 2020 9:50 am
by Deepika Reddy 1A
I believe the shape affects how many different shapes or positions the atoms in the molecule can be in. Since entropy is associated with the number of states or positions the atoms in a molecule can take, the shape of the molecule is associated with entropy.

Re: monoatomic, diatomic, linear, non-linear

Posted: Sun Feb 09, 2020 11:10 am
by Matt F
The shape affects entropy because it affects the molar heat capacity, which is part of the equation for a change in temperature (delta S = C*ln(T2/T1)). Depending on the shape the molar heat capacity can be 3/2*R, 5/2*R, or 7/2*R

Re: monoatomic, diatomic, linear, non-linear

Posted: Sun Feb 09, 2020 10:06 pm
by ASetlur_1G
Do we have to have all the molar heat capacities for the different shapes memorized? I don't think all of them are on the constants and equations sheet...