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1、饱和蒸气压饱和蒸气压(saturated vapor pressure )在一定温度下,与液体或固体处于相平衡的蒸气所具有的压力称为饱和蒸气压。同一物质在不同温度下有不同的蒸气 压,并随着温度的升高而增大。例如,在 30C时,水的饱和蒸气压为4132.982Pa,乙 醇为10532.438Pa。而在100C 时,水的饱和蒸气压增大到101324.72Pa,乙醇为222647.74Pa。饱和蒸气压是液体的一项重要物理性质,如液体的沸点、液体混合物 的相对挥发度等都与之有关。饱和蒸气压曲线水在不同温度下的饱和蒸气压 Saturated Water Vapor Pressures at Differ
2、ent Temperatures温度饱和蒸气压温度饱和蒸气压温度饱和蒸气压(Temperat(Saturated(Temperat(Saturated(Temperat(Saturatedure)waterure)waterure)watert/Cvaport/Cvaport/Cvaporpressure)pressure)pressure)/(x10 A3 Pa)/(x103Pa)/(x10 A3 Pa)00.61129125232.012503973.610.65716126239.242514041.220.70605127246.662524109.630.75813128254252
3、534178.940.81359129262.042544249.150.87260130270.022554320.260.93537131278.202564392.271.0021132286.572574465.181.0730133295.152584539.091 1482134303.932594613.7101.2281135312.932604689.4111.3129136322.142614766.1121.4027137331.572624843.7131.4979138341.222634922.3141.5988139351.092645001.8151.70561
4、40361.192655082.3161.8185141371.532665163.8171.9380142382.112675246.3182.0644143392.922685329.8192.1978144403.982695414.3202.3388145415.292705499.9212.4877146426.852715586.4222.6447147438.672725674.0232.8104148450.752735762.7242.9850149463.102745852.4253 1690150475.722755943.1263.3629151488.61276603
5、5.0273.5670152501.782776127.9283.7818153515.232786221.9294.0078154528.962796317.2304.2455155542.992806413.2314.4953156557.322816510.5324.7578157571.942826608.9335.0335158586.872836708.5345.3229159602.112846809.2355.6267160617.662856911.1365.9453161633.532867014.1376.2795162649.732877118.338662981636
6、66.252887223.7396.9969164683.102897330.2407.3814165700.292907438.0417.7840166717.832917547.0428.2054167735.702927657.2438.6463168753.942937768.6449.1075169772.522947881.3459.5898170791.472957995.24610.094171810.782968110.34710.620172830.472978226.84811.171173850.532988344.54911.745174870.982998463.5
7、5012.344175891.803008583.85112.970176913.033018705.45213.623177934.643028828.35314 303178956.663038952.65415.012179979.093049078.25515.7521801001.93059205.15616.5221811025.23069333.45717.3241821048.93079463.15818.1591831073.03089594.25919.0281841097.53099726.76019.9321851122.53109860.56120.873186114
8、7.93119995.86221.8511871173.8312101336322.8681881200.1313102716423.9251891226.1314104106525.0221901254.2315105516626.1631911281.9316106946727.3471921310.1317108386828.5761931338.8318109846929.8521941368.0319111317031.1761951397.6320112797132.5491961427.8321114297233.9721971458.5322115817335.44819814
9、89.7323117347436.9781991521.4324118897538.5632001553.6325120467640.2052011568.4326122047741.9052021619.7327123647843.6652031653.6328125257945.4872041688.0329126888047.3732051722.9330128528149.3242061758.4331130198251.3422071794.5332131878353.4282081831.1333133578455.5852091868.4334135288557.81521019
10、06.2335137018660.1192111944.6336138768762.49921219836337140538864.9582132023.2338142328967.4962142063.4339144129070.1172152104.2340145949172.8232162145.7341147789275 6142172187.8342149649378.49421822305343151529481.4652192273.8344153429584.5292202317.8345155339687.6882212362.5346157279790.9452222407
11、.8347159229894.3012232453.8348161209997 7592242500534916320100101 322252547.935016521101104 992262595935116825102108 772272644.635216932103112 662282694.135317138104116.672292744.235417348105120.792302795135517561106125.032312846735617775107129 392322899035717992108133.882332952135818211109138.502343005935918432110143.242353060.436018655111148.122363115.736118881112153 132373171.8362