作者asdghjk789 (葡萄果酱)
看板ChemEng
标题[问题] 化工热力学相关问题
时间Tue Jan 10 20:53:43 2012
1.
(a) Calculate the critical parameters(P,v,T at critical point)for a fluid that
obeys the van der Waals equation. (P+a/v^2)(v-b)=RT,where a and b are
positive constants.
(b) Show that its critical compressibility factor, Z = 3/8.
2.
(a) What would be the critical parameters for a fluid cbeying the ideal-gas
equation of state. Pv = RT ?
(b) What would be the critical parameters for a fluid obeying P(v-b) = RT ?
以上两题有请热力神人帮忙解答了 <(_ _)>
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 219.85.207.188
1F：推 bluebert:1.利用P.V於临界点呈双曲线利用双曲线特 114.34.243.225 01/10 21:36
2F：→ bluebert:性 P对V微分於T为恒温下 1次即2次 皆为0 114.34.243.225 01/10 21:38
3F：→ bluebert:解联立 即可求得Pc(P於临界点下) 与Vc 114.34.243.225 01/10 21:40
4F：→ bluebert:带回a.b即为所求 2.(b) Z=(Pc*Vc/R*Tc) 114.34.243.225 01/10 21:42
5F：→ bluebert:即可得到於临界点的压缩系数 114.34.243.225 01/10 21:42
6F：→ bluebert:第一次回答问题 希望对你有帮助 114.34.243.225 01/10 21:50
7F：→ mp823:这不是基本题吗XD 111.241.63.252 01/12 21:53