The Quantum Theory of Atoms and Molecules - The Ritchie Group
The Quantum Theory of Atoms and Molecules - The Ritchie Group
The Quantum Theory of Atoms and Molecules - The Ritchie Group
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Quantisation is the answer….<br />
Δε 〉〉 kT Δε ≈ kT Δε<br />
〈〈 kT<br />
Heat capacity<br />
( R/2 J K-1 mol-1)<br />
8<br />
6<br />
4<br />
2<br />
0<br />
Debye<br />
Einstein<br />
B<br />
Temperature T<br />
Dulong & Petit<br />
1.What matters is size<br />
<strong>of</strong> Δε compared to kT<br />
2.Each solid has a<br />
unique Δε ⇒ C v (T)<br />
“cuts-on” at different<br />
T but has same shape<br />
for all.
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