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《Journal of Anhui Normal University(Natural Science)》 2010-06
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The Change of Van De Waals Coefficients with Temperature and Its Influence on Heat Properties

LIU Guo-yao(College of Physics and Electronic Engineering,Mianyang Teachers' College,Mianyang 621000,China)  
Based on the thermodynamics method,approximate rule in the changes of Van De Waals coefficients in the temperature region 400K-2500K and the effect on heat properties with temperature are studied.The problems related in nitrogen are discussed,too,and compared with ideal gas.The results show that there is still the influence from the intermolecular interaction in the given temperature region,the change of Van De Waals coefficients are better liner relations with temperature.The influences from coefficient a and b are different.As the temperature is higher,the influences are all lower.
【Fund】: 四川省教育厅重点科研项目(08ZA164)
【CateGory Index】: O414.1
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