水的飽和蒸汽壓與溫度對(duì)應(yīng)表

1、水的飽和蒸汽壓與溫度對(duì)應(yīng)表一、水的飽和蒸汽壓與溫度的關(guān)系蒸汽壓是一定外界條件下，液體中的液態(tài)分子會(huì)蒸發(fā)為氣態(tài)分子，同時(shí)氣態(tài)分子也會(huì)撞擊液面回歸液態(tài)。這是單組分系統(tǒng)發(fā)生的兩相變化，一定時(shí)間后，即可達(dá)到平衡。平衡時(shí)，氣態(tài)分子含量達(dá)到最大值，這些氣態(tài)分子對(duì)液體產(chǎn)生的壓強(qiáng)稱為蒸氣壓。水的表面就有水蒸氣壓，當(dāng)水的蒸氣壓達(dá)到水面上的氣體總壓的時(shí)候，水就沸騰。我們通?？吹剿疅_，就是在100攝氏度時(shí)水的蒸氣壓等于一個(gè)大氣壓。蒸氣壓隨溫度變化而變化，溫度越高，蒸氣壓越大，當(dāng)然還和液體種類有關(guān)。一定的溫度下，與同種物質(zhì)的液態(tài)(或固態(tài))處于平衡狀態(tài)的蒸氣所產(chǎn)生的壓強(qiáng)叫飽和蒸氣壓，它隨溫度升高而增加。如：放在杯子里

2、的水，會(huì)因不斷蒸發(fā)變得愈來愈少。如果把純水放在一個(gè)密閉的容器里，并抽走上方的空氣。當(dāng)水不斷蒸發(fā)時(shí)，水面上方氣相的壓力，即水的蒸氣所具有的壓力就不斷增加。但是，當(dāng)溫度一定時(shí)，氣相壓力最終將穩(wěn)定在一個(gè)固定的數(shù)值上，這時(shí)的氣相壓力稱為水在該溫度下的飽和蒸氣壓力。當(dāng)氣相壓力的數(shù)值達(dá)到飽和蒸氣壓力的數(shù)值時(shí)，液相的水分子仍然不斷地氣化，氣相的水分子也不斷地冷凝成液體，只是由于水的氣化速度等于水蒸氣的冷凝速度，液體量才沒有減少，氣體量也沒有增加，液體和氣體達(dá)到平衡狀態(tài)。所以，液態(tài)純物質(zhì)蒸氣所具有的壓力為其飽和蒸氣壓力時(shí)，氣液兩相即達(dá)到了相平衡。飽和蒸氣壓是物質(zhì)的一個(gè)重要性質(zhì)，它的大小取決于物質(zhì)的本性和溫度。

3、飽和蒸氣壓越大，表示該物質(zhì)越容易揮發(fā)。 二、水的飽和蒸汽壓與溫度對(duì)應(yīng)表水的飽和蒸汽壓與溫度對(duì)應(yīng)表溫度 飽和蒸氣壓kpa溫度 飽和蒸氣壓kpa溫度 飽和蒸氣壓kpa00.61129125232.012503973.610.65716126239.242514041.220.70605127246.662524109.630.75813128254.252534178.940.81359129262.042544249.150.8726130270.022554320.260.93537131278.22564392.271.0021132286.572574465.181.073133295.1

4、5258453991.1482134303.932594613.7101.2281135312.932604689.4111.3129136322.142614766.1121.4027137331.572624843.7131.4979138341.222634922.3141.5988139351.092645001.8151.7056140361.192655082.3161.8185141371.532665163.8171.938142382.112675246.3182.0644143392.922685329.8192.1978144403.982695414.3202.3388

5、145415.292705499.9212.4877146426.852715586.4222.6447147438.672725674.0 232.8104148450.752735762.7242.9850 149463.10 2745852.4253.1690 150475.722755943.1263.3629151488.612766035.0 273.5670 152501.782776127.9283.7818153515.232786221.9294.0078154528.962796317.2304.2455155542.992806413.2314.4953156557.3

6、22816510.5324.7578157571.942826608.9335.0335158586.872836708.5345.3229159602.112846809.2355.6267160617.662856911.1365.9453161633.532867014.1376.2795162649.732877118.3386.6298163666.252887223.7396.9969164683.10 2897330.2407.3814165700.292907438.0 417.7840 166717.832917547.0 428.2054167735.70 2927657.

7、2438.6463168753.942937768.6449.1075169772.522947881.3459.5898170791.472957995.24610.094171810.782968110.34710.62172830.472978226.84811.171173850.532988344.54911.745174870.982998463.55012.344175891.80 3008583.85112.97176913.033018705.45213.623177934.643028828.35314.303178956.663038952.65415.012179979

8、.093049078.25515.7521801001.93059205.15616.5221811025.23069333.45717.3241821048.93079463.15818.15918310733089594.25919.0281841097.53099726.76019.9321851122.53109860.56120.8731861147.93119995.86221.8511871173.8312101336322.8681881200.1313102716423.9251891226.1314104106525.0221901254.2315105516626.163

9、1911281.9316106946727.3471921310.1317108386828.5761931338.8318109846929.8521941368.0 319111317031.1761951397.6320112797132.5491961427.8321114297233.9721971458.5322115817335.4481981489.7323117347436.9781991521.4324118897538.5632001553.6325120467640.2052011568.4326122047741.9052021619.7327123647843.66

10、52031653.6328125257945.4872041688.0 329126888047.3732051722.9330128528149.3242061758.4331130198251.3422071794.5332131878353.4282081831.1333133578455.5852091868.4334135288557.8152101906.2335137018660.1192111944.6336138768762.4992121983.6337140538864.9582132023.2338142328967.4962142063.4339144129070.1

11、172152104.2340145949172.8232162145.7341147789275.6142172187.8342149649378.4942182230.5343151529481.4652192273.8344153429584.5292202317.8345155339687.6882212362.5346157279790.9452222407.8347159229894.3012232453.8348161209997.7592242500.534916320100101.322252547.935016521101104.992262595.9351168251021

12、08.772272644.635216932103112.662282694.135317138104116.672292744.235417348105120.792302795.135517561106125.032312846.735617775107129.392322899.0 35717992108133.882332952.135818211109138.50 2343005.935918432110143.242353060.4360186551111148.122363115.736118881112153.132373171.836219110113158.292383288.636319340114163.582393286.336419574115169.022403344.736519809116174.612413403.936620048117180.342423463.936720289118186.232433524.736820533119192.282443586.336920780120198.482453648.83702103012120