绝热系统中比热测定的新方法

A NEW METHOD FOR MEASURING SPECIFIC HEAT USING ADIABATIC CALORIMETER

根据比热测定的一般原理，建立了用绝热式量热计测定物质比热的相对比热公式，测定了三种小比热物质及二甲亚砜水混合物的比热．测定结果验证了相对比热公式的正确性．探讨了二甲亚砜水混合物的比热与活度系数的关系．

Based on the general principle for measuring specific heat,a relative specific heat formula to measure specific heat is proposed.The specific heats of several materials with small specific heat and waterDMSO mixture have been measured in adiabatic calorimeter.From the experimental results, it is show that the relative specific heat formula is valid for specific heat measuring.The relationship between the specific heat of waterDMSO mixture and their activity coefficients is also discussed.