题目内容
如图,柱形容器内用不漏气的轻质绝热活塞封闭一定量的理想气体,容器外包裹保温材料。开始时活塞至容器底部的高度为H1,容器内气体温度与外界温度相等。在活塞上逐步加上多个砝码后,活塞下降到距容器底部H2处,气体温度升高了△T;然后取走容器外的保温材料,活塞位置继续下降,最后静止于距容器底部H3处:已知大气压强为p0。求:气体最后的压强与温度。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242104210402784.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242104210402784.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210421727826.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210422834692.png)
由
到
,![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242104254391055.png)
由
到
,气体压强不变,![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242104275451066.png)
解方程得
;![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210422834692.png)
【考点定位】理想气体状态方程
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210423926334.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210424691368.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242104254391055.png)
由
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210424691368.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210426750375.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242104275451066.png)
解方程得
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210421727826.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824210422834692.png)
【考点定位】理想气体状态方程
![](http://thumb2018.1010pic.com/images/loading.gif)
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