例4已知理想气体的状态方程pV=RT (R为常数),求证:DT ov aT dp RT RT 证 、RTⅣR pV aT v → oT p R ap R ap aV OT RT R V RT ay ot op R P 上一页下一页返回例 4 已知理想气体的状态方程 pV = RT (R为常数),求证: . 证 = V RT p ; 2 V RT V p = − = p RT V ; p R T V = = R pV T ; R V p T = = p T T V V p 2 V RT − p R R V = −1. pV RT = − = −1 p T T V V p