单位物质的量的气体所占的体积,这个体积叫做该气体摩尔体积,单位是L/mol(升/摩尔),在标准状况下(STP,0℃,101.33kPa)1摩尔任何理想气体所占的体积都约为22.4升,气体摩尔体积为22.4 L/mol。在25℃,1.01×10^5Pa时气体摩尔体积约为24.5L/mol。
所以这是气体的摩尔体积。
现在让压强趋于,现在测量气体的压强,和摩尔体积。
So, you do this measurement, you measure with the gas, you measure the pressure and the molar volume.
这是气体的摩尔体积。
The molar volume is being changed a little bit trying to make things collide with each other, they can't occupy the same volume.
摩尔体积发生了很小的改变,如果你试图使气体分子间相互碰撞,他们不能占据同一个位置。
So, you do this measurement, you measure with the gas, you measure the pressure and the molar volume.
现在让压强趋于,现在测量气体的压强,和摩尔体积。
In this case, V = /P. Have two quantities and the number of moles gives you another property. You don't need to know the volume. All you need to know is the pressure and temperature and the number of moles to get the volume.
以及气体的摩尔数,就可以得到第三个量,知道压强,温度和气体的,摩尔数就可以推导出气体的体积,这称为状态方程,它建立了状态函数之间的联系。
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