混合法测量溶液比热容  

On the Heat Capacity of Salt Solution with Hybrid Method

作　　者：董光兴[1] 王军[1] 葛素红[1] 王新星[1] 

机构地区：[1]河西学院物理与机电工程学院,甘肃张掖734000

出　　处：《河西学院学报》2016年第2期54-58,共5页Journal of Hexi University

基　　金：河西学院校长基金(XZ2014-20);河西学院教改项目(HXXYJY-2014-024)

摘　　要：应用混合法测量了不同密度盐溶液的比热容,提出了一种应用牛顿冷却定律进行散热修正的方法.实验发现,在常温下盐溶液的比热容随着密度的增大而降低.因此,可以得到定性的结论,水中金属阳离子含量的增加会降低其比热容.The paper measures specific heat capacity of saline solution,and bases on Newton＇s law of cooling to process the experinlental data. The correspondence relationship between specific heat of solution and the concentration have been obtained. The results show that the greater the concentration, the less the heat capacity. By measuring the heat capacity of saline solution,we have verified the physical law that specific heat capacity of water is the biggest and enriching the understanding of the nature soil of the solution.

关 键 词：溶液 混合法 食盐 比热容 散热修正 

分 类 号：O551.1[理学—热学与物质分子运动论]