作者GOPOL (爬不起來阿!!)
看板Chemistry
標題請問一題關於熱力學的問題
時間Tue Feb 7 23:45:33 2006
in the plot of enthalpy VS temperature for metals A and B
if the slope of A less than B which of the following is true
(A)the entropy of A is less than B
(B)melting point of metal A is higher than that of metal B
(C)more heat is needed to heat up metal B than A when the equal
moles of A and B are used
(D)heat will flow from B to A when they are in direct contact
請化學高手指教一下 這一題不太懂
謝謝
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1F：推 ast154251:此斜率等於熱容 02/07 23:52
2F：推 CHHO:C 02/08 10:36
3F：推 lofishive:Capacity= H 對 T之偏微分 (固定P or V) 02/08 13:45
4F：推 Obiwang:V不用固定吧... 02/08 14:52
5F：推 ast154251:P或V一定要固定其一，否則熱容無法定義 02/08 22:15
6F：→ lofishive:應該說:根據Legendre轉換下 使用固定P的狀況較常用 02/08 23:29
7F：推 Obiwang: 唔.我只會從 dH = VdP + TdS 來想耶。定V是怎樣的情況阿? 02/09 00:31
8F：推 reckson1017:樓上的我有寫解釋參考看看 02/09 00:53