用表面张力实验简单分析气体模型  

Analysis the gas’ model with surface tension coefficient measuring instrument

作　　者：葛素红[1,2] 马喜平 孙桂华 王新星[1,2] Ge Su-hong;Ma Xi-ping;Sun Gui-hua;Wang Xin-xing(College of Physics and electromechanical Engneering;Institute of theoretical physics,Hexi University,Zhangye Gansu 734000)

机构地区：[1]河西学院物理与机电工程学院 [2]河西学院物理与机电工程学院理论物理研究所,甘肃张掖734000

出　　处：《河西学院学报》2020年第2期41-48,共8页Journal of Hexi University

摘　　要：本文测量了将食盐和白糖加入市售泡泡液中配成的不同浓度液体的表面张力系数,及其液体吹出来的泡泡半径,并由其比值计算获得泡泡液内外压强差的数值约为0.318Pa或0.029Pa,即肥皂泡内外压强差是一个很小的值域,0.1~0.01Pa.理论分析泡泡内外压强差,理想气体模型数值为21.669kPa,范德瓦耳斯气体模型数值为0.0133Pa,在实验数值的范围内.可以认为在张掖这个海拨高度,用范德瓦耳斯气体模型来处理实际气体,是合理和可行的.The surface tension coefficient of liquid with different concentrations mixed with salt and sugar in the bubble solution and the bubble radius were measured. The pressure difference between the inside and outside of the spherical was calculated from the ratio of the surface tension coefficient of liquid and its radius. The pressure difference between the inside and outside of the spherical bubble was 0.318 pa or 0.029 pa,that is,the pressure difference between the inside and outside of the spherical soap bubble was a very small range,0.1-0.01 Pa. Theoretical analysis of the pressure difference between the inside and outside of the spherical bubble shows that the ideal gas model value is 21.669 kPa and the van der Waals gas model value is 0.0133 Pa,which is within the range of experimental values. It is reasonable and feasible to use the van der Waals gas model to deal with the actual gas in Zhangye.

关 键 词：混合溶液 表面张力系数 泡泡半径 气体参数 

分 类 号：O552.5[理学—热学与物质分子运动论]