气体的摩尔热容量随温度变化的实验研究  

Temperature dependence of the molar heat capacity of gas

作　　者：冯尚申[1] 林新源[1] 

机构地区：[1]台州学院物理系,浙江临海317000

出　　处：《物理实验》2005年第7期3-4,8,共3页Physics Experimentation

摘　　要：采用压力传感器和温度传感器,通过数据接口由计算机实时采集数据并进行处理,观察到气体的热力学过程的状态变化,测得了氧气的摩尔热容量CV随着温度的变化.结果表明氧气的CV随温度的变化有一突变,这与能量均分定理所描述的基本一致,氧气的振动自由度被冻结的温度在240K左右.The data collected by the computer interface are analyzed. Pressure and temperature sensors are used in the experiments. The thermodynamic process is recorded. The temperature dependence of the molar heat capacity of oxygen C_V is obtained. The result shows that there is one saltation C_V . The experimental data is in good agreement with theorem of energy average. It is about (240 K) that temperature of vibrancy freedom degree is frozen.

关 键 词：摩尔热容量 摩尔热容比 氧气 数据接口 

分 类 号：O551.3[理学—热学与物质分子运动论]