题目内容
一定质量的理想气体经历了温度缓慢升高的变化,如图甲、乙所示,p-T和V-T图各记录了其部分变化过程,试求:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241334158644247.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241334159583802.png)
(1)温度为600 K时气体的压强.
(2)在p-T图象上将温度从400 K升 高到600 K的变化过程补充完整.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241334158644247.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241334159583802.png)
(1)温度为600 K时气体的压强.
(2)在p-T图象上将温度从400 K升 高到600 K的变化过程补充完整.
(1)p2=1.25×105 Pa (2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082413341600410703.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082413341600410703.png)
(1) p1=1.0×105 Pa,V1=2.5 m3,T1=400 K
V2=3 m3,T2=600 K (1分)
由理想气体方程:
=
(4分)
得:p2=
=1.25×105 Pa (1分)
(2)由V-T图知,400K到500K为等容变化,在P-T图上为过原点的倾斜直线,图像见答案中的图,500K-600K为等温变化,在P-T图上为平行横轴的直线。
V2=3 m3,T2=600 K (1分)
由理想气体方程:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133416067594.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133416129649.png)
得:p2=
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133416160722.png)
(2)由V-T图知,400K到500K为等容变化,在P-T图上为过原点的倾斜直线,图像见答案中的图,500K-600K为等温变化,在P-T图上为平行横轴的直线。
![](http://thumb2018.1010pic.com/images/loading.gif)
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