[問題] 一題熱力學問題

[mungdean (12345)]

According to Richard's rules that the heats of melting are

related to the melting points of metallic elements as follows:

ΔHm=9.61Tm +-0.01J/K/mole  for FCC metallic elements
ΔHm=8.25Tm +-0.19J/K/mole  for BCC metallic elements

compare the entropy of FCC and BCC metallic elements by observing
the above relations and enplain why

想請問一下這題該怎麼解釋?? 不是應該堆積密度大的entropy比較小嗎?

照題目來看ΔHm/Tm=ΔS  這樣一來不就 FCC>BCC了?

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推 lucifer19:我覺得沒錯欸  你的ΔS是熔化時的ΔS
→ lucifer19:液態的金屬亂度都差不多  所以由本來較
→ lucifer19:規則的FCC轉變為液體的亂度變化會大於
→ lucifer19:BCC金屬固體變化為液體的亂度變化