【摘要】 本实验是化学工程与工艺专业实验的重要组成。通过控制温度,调节CO₂压力使其达到临界状态,进而了解临界乳光、整体相变和汽液二相模糊不清的三种现象。在不同实验温度（低于、等于和高于临界温度）下,测定CO₂的PVT曲线,利用热力学原理理解CO₂临界现象。通过实验提高学生对CO₂临界状态的感性认识和实验动手能力,培养学生理论联系实际的思维习惯。更多还原

【Abstract】 This experiment is an important part of chemical engineering and technology experiment.By controlling the temperature and adjusting the pressure of CO₂ to reach the critical state,the three phenomena of critical opalescence,global phase transition and vapor-liquid two-phase ambiguity can be understood.The PVT curves of CO₂ were measured at different experimental temperatures（below,equal to and above the critical temperature）,and the critical phenomenon of CO₂ was understood by thermodynamics.Through the experiment,the students′perceptual knowledge of CO₂ critical state and experimental ability are improved,and their thinking habit of integrating theory with practice is cultivated.更多还原