[學習] Internal Pressure

看板Chemistry作者edisonjang (edisonjang)時間16年前 (2007/12/02 23:42)推噓1(1推 0噓 1→)

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問一題 Atkins' 裡的問題 p105 self-test 這邊講到 internal pressure πT= (dU/dV)T d:偏微 dU=(dU/dS)VdS + (dU/dV)SdV (dU/dV)T=(dU/dS)V(dS/dV)T+(dU/dV)S ﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌﹌如何得到? From Maxwell relation (dS/dV)T=(dP/dT)V πT= (dU/dV)T = T(dP/dT)V-P for Virial equation of state Z= PVm/RT = 1+ B2V(T)/Vm + B3V(T)/Vm2 (平方) +.... P = RT/Vm + B2V(T)RT/Vm2 +B3V(T)RT/Vm3 +... dP/dT = R/Vm + B2V(T)R/Vm2 +B3V(T)R/Vm3 +... 帶入 πT = T(dP/dT)V-P = T(R/Vm + B2V(T)R/Vm2 +B3V(T)R/Vm3 +...)V -P =(RT/Vm + B2V(T)RT/Vm2 +B3V(T)RT/Vm3 +...)V -P =P - P = 0 這樣對嗎 ?? 明天就要考了還完全沒連起來真糟... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 59.115.93.29

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