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;温度(ºC)压力差值(kpa)温度(K)液体饱和蒸汽压(kpa)1/TInp56.5-59.21329.6541.890.0030310.6463.5-47.92336.6553.180.0029710.8869.5-28.4342.6572.70.0029211.1972-22.15345.1578.950.002911.2872.8-17.12345.9583.980.0028911.341、因为标准大气压为101.325kpa,则INP=11.5261 代入y=-5093.5x+26.051 得: 11.5261=-5093.5x+26.051 X=1/T T=350.67K (t=77.52ºc)2、根据INP-1/T直线斜率: *vapHm=-Rm =-8.3148*(-5093.5) =42.35KJ/mol3、误差分析:乙醇的平均摩尔汽化热参考值*vapHm=42.59KJ/mol 相对误差*=(42.59-42.35)/42.59=0.0056乙醇在标准大气压的沸点为t=78.30 ºc相对误差*=(78.30-77.52)/78.30=0.00996.