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Posted by on Friday, March 28, 2008 at 4:34pm.

Which of the following conditions MUST be true for the entropy of a pure solid to be zero?

a) T must be 0 K
b) The solid must be crystalline and not amorphous
c)the solid must be perfectly ordered
d) the solid form must be an element

  • Gen Chem - , Friday, March 28, 2008 at 4:49pm

    a)

  • Gen Chem - , Friday, March 28, 2008 at 4:51pm

    T=0K
    if
    S=0 (s is entropy)

  • Gen Chem - , Friday, March 28, 2008 at 5:20pm

    It can be more than one of these choices, its a "check all that apply" question. Are there any other options that must apply for S=0??

  • Gen Chem - , Friday, March 28, 2008 at 5:26pm

    See here:

    http://en.wikipedia.org/wiki/Residual_entropy

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