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👨🏻‍🏫 學術台其他 - 科學

用戶87166

2010-12-20 6:21 am

一種"特別物質" X 在4個溫度(T1-T4)下的P-V 圖如下:

圖片參考：http://imgcld.yimg.com/8/n/HA00466014/o/701012190129313873429410.jpg

P=Pressure V=Volume
已知d是臨界點
1. 請確定及解釋 "?"平伏部分
2. 提出X是什麼

So far, 正係諗到T1係理想氣體圖
仲有可能同PV=nRT 個d有關 -.-

更新1:

諗多陣,可能 "?" 是X的凝結區域因液體不壓縮原理你地覺得點?

回答 (1)

天同

2010-12-20 7:03 am

✔ 最佳答案

1. The flat region marked "?" shows saturated vapour and liquid in equilibrium.

In this region, a reduction in volume doesn't increase the pressure as more vapour is condensed to become liquid. At the (left) end of this region, when all vapour has condensed to liquid, a reduction in volume causes a rapid increase in the pressure of liquid because liquid is almost imcompressible.

2. Many substances exhibit the property shown on the given P-V diagram. Water is an example.

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