[問題] 化工熱力學相關問題

[asdghjk789 (葡萄果醬)]

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 ?



以上兩題有請熱力神人幫忙解答了 <(_ _)>


--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 219.85.207.188
推 bluebert:1.利用P.V於臨界點呈雙曲線利用雙曲線特
→ bluebert:性 P對V微分於T為恆溫下 1次即2次 皆為0
→ bluebert:解聯立 即可求得Pc(P於臨界點下) 與Vc
→ bluebert:帶回a.b即為所求  2.(b) Z=(Pc*Vc/R*Tc)
→ bluebert:即可得到於臨界點的壓縮係數
→ bluebert:第一次回答問題 希望對你有幫助
→ mp823:這不是基本題嗎XD