Homework Answers
The entropy which the crystal of a substance has at T=0 is called the residual entropy.
Entropy is denoted as S(0)
S(0) = k * In 4^N = k*N*In 4 (as 4 orientations)
For the sake of simplicity we will assume that only 1 mol of the sample is taken, therefore, Kn= R .
Then
S(0) = R In 4 = 2.303 R log 4 = 11.5 J/K.mol
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