在密闭条件中,在一定温度下,与固体或液体处于相平衡的蒸气所具有的压强称为饱和蒸气压。同一物质在不同温度下有不同的饱和蒸气压,并随着温度的升高而增大。纯溶剂的饱和蒸气压大于溶液的饱和蒸气压;对于同一物质,固态的饱和蒸气压小于液态的饱和蒸气压。
| 温度 | 饱和蒸气压 |
| t/℃ | (×10 3Pa) |
| 0 | 0.61129 |
| 1 | 0.65716 |
| 2 | 0.70605 |
| 3 | 0.75813 |
| 4 | 0.81359 |
| 5 | 0.8726 |
| 6 | 0.93537 |
| 7 | 1.0021 |
| 8 | 1.073 |
| 9 | 1.1482 |
| 10 | 1.2281 |
| 11 | 1.3129 |
| 12 | 1.4027 |
| 13 | 1.4979 |
| 14 | 1.5988 |
| 15 | 1.7056 |
| 16 | 1.8185 |
| 17 | 1.938 |
| 18 | 2.0644 |
| 19 | 2.1978 |
| 20 | 2.3388 |
| 21 | 2.4877 |
| 22 | 2.6447 |
| 23 | 2.8104 |
| 24 | 2.985 |
| 25 | 3.169 |
| 26 | 3.3629 |
| 27 | 3.567 |
| 28 | 3.7818 |
| 29 | 4.0078 |
| 30 | 4.2455 |
| 31 | 4.4953 |
| 32 | 4.7578 |
| 33 | 5.0335 |
| 34 | 5.3229 |
| 35 | 5.6267 |
| 36 | 5.9453 |
| 37 | 6.2795 |
| 38 | 6.6298 |
| 39 | 6.9969 |
| 40 | 7.3814 |
| 41 | 7.784 |
| 42 | 8.2054 |
| 43 | 8.6463 |
| 44 | 9.1075 |
| 45 | 9.5898 |
| 46 | 10.094 |
| 47 | 10.62 |
| 48 | 11.171 |
| 49 | 11.745 |
| 50 | 12.344 |
| 51 | 12.97 |
| 52 | 13.623 |
| 53 | 14.303 |
| 54 | 15.012 |
| 55 | 15.752 |
| 56 | 16.522 |
| 57 | 17.324 |
| 58 | 18.159 |
| 59 | 19.028 |
| 60 | 19.932 |
| 61 | 20.873 |
| 62 | 21.851 |
| 63 | 22.868 |
| 64 | 23.925 |
| 65 | 25.022 |
| 66 | 26.163 |
| 67 | 27.347 |
| 68 | 28.576 |
| 69 | 29.852 |
| 70 | 31.176 |
| 71 | 32.549 |
| 72 | 33.972 |
| 73 | 35.448 |
| 74 | 36.978 |
| 75 | 38.563 |
| 76 | 40.205 |
| 77 | 41.905 |
| 78 | 43.665 |
| 79 | 45.487 |
| 80 | 47.373 |
| 81 | 49.324 |
| 82 | 51.342 |
| 83 | 53.428 |
| 84 | 55.585 |
| 85 | 57.815 |
| 86 | 60.119 |
| 87 | 62.499 |
| 88 | 64.958 |
| 89 | 67.496 |
| 90 | 70.117 |
| 91 | 72.823 |
| 92 | 75.614 |
| 93 | 78.494 |
| 94 | 81.465 |
| 95 | 84.529 |
| 96 | 87.688 |
| 97 | 90.945 |
| 98 | 94.301 |
| 99 | 97.759 |
| 100 | 101.32 |
| 101 | 104.99 |
| 102 | 108.77 |
| 103 | 112.66 |
| 104 | 116.67 |
| 105 | 120.79 |
| 106 | 125.03 |
| 107 | 129.39 |
| 108 | 133.88 |
| 109 | 138.5 |
| 110 | 143.24 |
| 111 | 148.12 |
| 112 | 153.13 |
| 113 | 158.29 |
| 114 | 163.58 |
| 115 | 169.02 |
| 116 | 174.61 |
| 117 | 180.34 |
| 118 | 186.23 |
| 119 | 192.28 |
| 120 | 198.48 |
| 121 | 204.85 |
| 122 | 211.38 |
| 123 | 218.09 |
| 124 | 224.96 |
| 125 | 232.01 |
| 126 | 239.24 |
| 127 | 246.66 |
| 128 | 254.25 |
| 129 | 262.04 |
| 130 | 270.02 |
| 131 | 278.2 |
| 132 | 286.57 |
| 133 | 295.15 |
| 134 | 303.93 |
| 135 | 312.93 |
| 136 | 322.14 |
| 137 | 331.57 |
| 138 | 341.22 |
| 139 | 351.09 |
| 140 | 361.19 |
| 141 | 371.53 |
| 142 | 382.11 |
| 143 | 392.92 |
| 144 | 403.98 |
| 145 | 415.29 |
| 146 | 426.85 |
| 147 | 438.67 |
| 148 | 450.75 |
| 149 | 463.1 |
| 150 | 475.72 |
| 151 | 488.61 |
| 152 | 501.78 |
| 153 | 515.23 |
| 154 | 528.96 |
| 155 | 542.99 |
| 156 | 557.32 |
| 157 | 571.94 |
| 158 | 586.87 |
| 159 | 602.11 |
| 160 | 617.66 |
| 161 | 633.53 |
| 162 | 649.73 |
| 163 | 666.25 |
| 164 | 683.1 |
| 165 | 700.29 |
| 166 | 717.83 |
| 167 | 735.7 |
| 168 | 753.94 |
| 169 | 772.52 |
| 170 | 791.47 |
| 171 | 810.78 |
| 172 | 830.47 |
| 173 | 850.53 |
| 174 | 870.98 |
| 175 | 891.8 |
| 176 | 913.03 |
| 177 | 934.64 |
| 178 | 956.66 |
| 179 | 979.09 |
| 180 | 1001.9 |
| 181 | 1025.2 |
| 182 | 1048.9 |
| 183 | 1073 |
| 184 | 1097.5 |
| 185 | 1122.5 |
| 186 | 1147.9 |
| 187 | 1173.8 |
| 188 | 1200.1 |
| 189 | 1226.1 |
| 190 | 1254.2 |
| 191 | 1281.9 |
| 192 | 1310.1 |
| 193 | 1338.8 |
| 194 | 1368 |
| 195 | 1397.6 |
| 196 | 1427.8 |
| 197 | 1458.5 |
| 198 | 1489.7 |
| 199 | 1521.4 |
| 200 | 1553.6 |
| 201 | 1568.4 |
| 202 | 1619.7 |
| 203 | 1653.6 |
| 204 | 1688 |
| 205 | 1722.9 |
| 206 | 1758.4 |
| 207 | 1794.5 |
| 208 | 1831.1 |
| 209 | 1868.4 |
| 210 | 1906.2 |
| 211 | 1944.6 |
| 212 | 1983.6 |
| 213 | 2023.2 |
| 214 | 2063.4 |
| 215 | 2104.2 |
| 216 | 2145.7 |
| 217 | 2187.8 |
| 218 | 2230.5 |
| 219 | 2273.8 |
| 220 | 2317.8 |
| 221 | 2362.5 |
| 222 | 2407.8 |
| 223 | 2453.8 |
| 224 | 2500.5 |
| 225 | 2547.9 |
| 226 | 2595.9 |
| 227 | 2644.6 |
| 228 | 2694.1 |
| 229 | 2744.2 |
| 230 | 2795.1 |
| 231 | 2846.7 |
| 232 | 2899 |
| 233 | 2952.1 |
| 234 | 3005.9 |
| 235 | 3060.4 |
| 236 | 3115.7 |
| 237 | 3171.8 |
| 238 | 3288.6 |
| 239 | 3286.3 |
| 240 | 3344.7 |
| 241 | 3403.9 |
| 242 | 3463.9 |
| 243 | 3524.7 |
| 244 | 3586.3 |
| 245 | 3648.8 |
| 246 | 3712.1 |
| 247 | 3776.2 |
| 248 | 3841.2 |
| 249 | 3907 |
| 250 | 3973.6 |
| 251 | 4041.2 |
| 252 | 4109.6 |
| 253 | 4178.9 |
| 254 | 4249.1 |
| 255 | 4320.2 |
| 256 | 4392.2 |
| 257 | 4465.1 |
| 258 | 4539 |
| 259 | 4613.7 |
| 260 | 4689.4 |
| 261 | 4766.1 |
| 262 | 4843.7 |
| 263 | 4922.3 |
| 264 | 5001.8 |
| 265 | 5082.3 |
| 266 | 5163.8 |
| 267 | 5246.3 |
| 268 | 5329.8 |
| 269 | 5414.3 |
| 270 | 5499.9 |
| 271 | 5586.4 |
| 272 | 5674 |
| 273 | 5762.7 |
| 274 | 5852.4 |
| 275 | 5943.1 |
| 276 | 6035 |
| 277 | 6127.9 |
| 278 | 6221.9 |
| 279 | 6317.2 |
| 280 | 6413.2 |
| 281 | 6510.5 |
| 282 | 6608.9 |
| 283 | 6708.5 |
| 284 | 6809.2 |
| 285 | 6911.1 |
| 286 | 7014.1 |
| 287 | 7118.3 |
| 288 | 7223.7 |
| 289 | 7330.2 |
| 290 | 7438 |
| 291 | 7547 |
| 292 | 7657.2 |
| 293 | 7768.6 |
| 294 | 7881.3 |
| 295 | 7995.2 |
| 296 | 8110.3 |
| 297 | 8226.8 |
| 298 | 8344.5 |
| 299 | 8463.5 |
| 300 | 8583.8 |
| 301 | 8705.4 |
| 302 | 8828.3 |
| 303 | 8952.6 |
| 304 | 9078.2 |
| 305 | 9205.1 |
| 306 | 9333.4 |
| 307 | 9463.1 |
| 308 | 9594.2 |
| 309 | 9726.7 |
| 310 | 9860.5 |
| 311 | 9995.8 |
| 312 | 10133 |
| 313 | 10271 |
| 314 | 10410 |
| 315 | 10551 |
| 316 | 10694 |
| 317 | 10838 |
| 318 | 10984 |
| 319 | 11131 |
| 320 | 11279 |
| 321 | 11429 |
| 322 | 11581 |
| 323 | 11734 |
| 324 | 11889 |
| 325 | 12046 |
| 326 | 12204 |
| 327 | 12364 |
| 328 | 12525 |
| 329 | 12688 |
| 330 | 12852 |
| 331 | 13019 |
| 332 | 13187 |
| 333 | 13357 |
| 334 | 13528 |
| 335 | 13701 |
| 336 | 13876 |
| 337 | 14053 |
| 338 | 14232 |
| 339 | 14412 |
| 340 | 14594 |
| 341 | 14778 |
| 342 | 14964 |
| 343 | 15152 |
| 344 | 15342 |
| 345 | 15533 |
| 346 | 15727 |
| 347 | 15922 |
| 348 | 16120 |
| 349 | 16320 |
| 350 | 16521 |
| 351 | 16825 |
| 352 | 16932 |
| 353 | 17138 |
| 354 | 17348 |
| 355 | 17561 |
| 356 | 17775 |
| 357 | 17992 |
| 358 | 18211 |
| 359 | 18432 |
| 360 | 18655 |
| 361 | 18881 |
| 362 | 19110 |
| 363 | 19340 |
| 364 | 19574 |
| 365 | 19809 |
| 366 | 20048 |
| 367 | 20289 |
| 368 | 20533 |
| 369 | 20780 |
| 370 | 21030 |
| 371 | 21286 |
| 372 | 21539 |
| 373 | 21803 |