题目内容

（等温过程始末态）1 mol 理想气体从 p1, V1, T1分别经两种不同的过程变到终态: (1) 等温可逆膨胀到 p2, V2; (2) 反抗恒外压 p2等温膨胀到内外压相等, 此时气体的压力为 p2', 体积为 V2', 则  。

A. p2= p2', V2= V2'
B. p2> p2', V2> V2'
C. p2= p2', V2< V2'
D. p2< p2', V2= V2'

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