Spreadsheet: 119a7feb-a78c-4681-86d1-26b806f6e8aa
Sheet: JANAF

 | Please read
 |  |  | Using the NIST JANAF On-line Thermochemical Database--Water Vapor
 |  |  |  |  |  |  |  |  |  |  |  |  | Figure 1.  Heat content of H2O in SI units |  |  |  |  |  |  |  | Figure 2.  Heat content of H2O in AES units
 |  | Water (H2O, gas) |  |  |  |  | Water
 |  |  |  |  |  |  | Molecular wt: | 18.0153
 |  | Table 1.  Thermodynamic properties of H2O(g)
 |  | [NAME], Temperature = Tr = 298.15 K |  |  |  |  | Standard State Pressure = p° = 0.1 MPa
 |  |  | J·K-1 mol-1 |  |  |  | [NAME]
 |  | T/K | Cp° | S° | -[G°-H°(Tr)]/T |  | H-H°(Tr) | ΔfH° | ΔfG° | log Kf
 |  | 0 | 0 | 0 | INFINITE |  | -9.904 | -238.921 | -238.921 | INFINITE
 |  | 100 | 33.299 | 152.388 | 218.534 |  | -6.615 | -240.083 | -236.584 | 123.579
 |  | 200 | 33.349 | 175.485 | 191.896 |  | -3.282 | -240.9 | -232.766 | 60.792
 | Reference temperature ==> | 298.15 | 33.59 | 188.834 | 188.834 |  | 0 | -241.826 | -228.582 | 40.047
 |  | 300 | 33.596 | 189.042 | 188.835 |  | 0.062 | -241.844 | -228.5 | 39.785
 |  | 400 | 34.262 | 198.788 | 190.159 |  | 3.452 | -242.846 | -223.901 | 29.238
 |  | 500 | 35.226 | 206.534 | 192.685 |  | 6.925 | -243.826 | -219.051 | 22.884
 |  | 600 | 36.325 | 213.052 | 195.55 |  | 10.501 | -244.758 | -214.007 | 18.631
 |  | 700 | 37.495 | 218.739 | 198.465 |  | 14.192 | -245.632 | -208.812 | 15.582 |  | Table 2.  Heat content of water vapor in different units. |  |  |  |  |  |  | Table 3.  Heat content equation parameters for water vapor = A + BT + CT2
 |  | 800 | 38.721 | 223.825 | 201.322 |  | 18.002 | -246.443 | -203.496 | 13.287 |  |  | J·mol-1 |  |  | Btu·lb-mol-1 |  |  |  |  | A | B | C
 |  | 900 | 39.987 | 228.459 | 204.084 |  | 21.938 | -247.185 | -198.083 | 11.496 |  | T, °C | H-H°(Tr) |  | T, °F | H-H°(Tr) |  |  |  | kJ/kg-mol; T = °C | -2655 | 35.96 | 0.004462
 |  | 1000 | 41.268 | 232.738 | 206.738 |  | 26 | -247.857 | -192.59 | 10.06 |  |  |  |  |  |  |  |  |  | kJ/m3; T = °C
 |  | 1100 | 42.536 | 236.731 | 209.285 |  | 30.191 | -248.46 | -187.033 | 8.881 |  |  |  |  |  |  |  |  |  | Btu/lb-mol;  T = °F | -1416 | 8.558 | 0.0005925
 |  | 1200 | 43.768 | 240.485 | 211.73 |  | 34.506 | -248.997 | -181.425 | 7.897 |  |  |  |  |  |  |  |  |  | Btu/ft3;  T = °F
 |  | 1300 | 44.945 | 244.035 | 214.08 |  | 38.942 | -249.473 | -175.774 | 7.063 |  |  |  |  |  |  |  |  |  | ([NAME] are STP)
 |  | 1400 | 46.054 | 247.407 | 216.341 |  | 43.493 | -249.894 | -170.089 | 6.346
 |  | 1500 | 47.09 | 250.62 | 218.52 |  | 48.151 | -250.265 | -164.376 | 5.724
 |  | 1600 | 48.05 | 253.69 | 220.623 |  | 52.908 | -250.592 | -158.639 | 5.179
 |  | 1700 | 48.935 | 256.63 | 222.655 |  | 57.758 | -250.881 | -152.883 | 4.698
 |  | 1800 | 49.749 | 259.451 | 224.621 |  | 62.693 | -251.138 | -147.111 | 4.269
 |  | 1900 | 50.496 | 262.161 | 226.526 |  | 67.706 | -251.368 | -141.325 | 3.885
 |  | 2000 | 51.18 | 264.769 | 228.374 |  | 72.79 | -251.575 | -135.528 | 3.54
 |  | 2100 | 51.823 | 267.282 | 230.167 |  | 77.941 | -251.762 | -129.721 | 3.227
 |  | 2200 | 52.408 | 269.706 | 231.909 |  | 83.153 | -251.934 | -123.905 | 2.942
 |  | 2300 | 52.947 | 272.048 | 233.604 |  | 88.421 | -252.092 | -118.082 | 2.682
 |  | 2400 | 53.444 | 274.312 | 235.253 |  | 93.741 | -252.239 | -112.252 | 2.443
 |  | 2500 | 53.904 | 276.503 | 236.86 |  | 99.108 | -252.379 | -106.416 | 2.223
 |  | 2600 | 54.329 | 278.625 | 238.425 |  | 104.52 | -252.513 | -100.575 | 2.021
 |  | 2700 | 54.723 | 280.683 | 239.952 |  | 109.973 | -252.643 | -94.729 | 1.833
 |  | 2800 | 55.089 | 282.68 | 241.443 |  | 115.464 | -252.771 | -88.878 | 1.658
 |  | 2900 | 55.43 | 284.619 | 242.899 |  | 120.99 | -252.897 | -83.023 | 1.495
 |  | 3000 | 55.748 | 286.504 | 244.321 |  | 126.549 | -253.024 | -77.163 | 1.344
 |  | 3100 | 56.044 | 288.337 | 245.711 |  | 132.139 | -253.152 | -71.298 | 1.201
 |  | 3200 | 56.323 | 290.12 | 247.071 |  | 137.757 | -253.282 | -65.43 | 1.068
 |  | 3300 | 56.583 | 291.858 | 248.402 |  | 143.403 | -253.416 | -59.558 | 0.943
 |  | 3400 | 56.828 | 293.55 | 249.705 |  | 149.073 | -253.553 | -53.681 | 0.825
 |  | 3500 | 57.058 | 295.201 | 250.982 |  | 154.768 | -253.696 | -47.801 | 0.713
 |  | 3600 | 57.276 | 296.812 | 252.233 |  | 160.485 | -253.844 | -41.916 | 0.608
 |  | 3700 | 57.48 | 298.384 | 253.459 |  | 166.222 | -253.997 | -36.027 | 0.509
 |  | 3800 | 57.675 | 299.919 | 254.661 |  | 171.98 | -254.158 | -30.133 | 0.414
 |  | 3900 | 57.859 | 301.42 | 255.841 |  | 177.757 | -254.326 | -24.236 | 0.325
 |  | 4000 | 58.033 | 302.887 | 256.999 |  | 183.552 | -254.501 | -18.334 | 0.239
 |  | 4100 | 58.199 | 304.322 | 258.136 |  | 189.363 | -254.684 | -12.427 | 0.158
 |  | 4200 | 58.357 | 305.726 | 259.252 |  | 195.191 | -254.876 | -6.516 | 0.081
 |  | 4300 | 58.507 | 307.101 | 260.349 |  | 201.034 | -255.078 | -0.6 | 0.007
 |  | 4400 | 58.65 | 308.448 | 261.427 |  | 206.892 | -255.288 | 5.32 | -0.063
 |  | 4500 | 58.787 | 309.767 | 262.486 |  | 212.764 | -255.508 | 11.245 | -0.131
 |  | 4600 | 58.918 | 311.061 | 263.528 |  | 218.65 | -255.738 | 17.175 | -0.195
 |  | 4700 | 59.044 | 312.329 | 264.553 |  | 224.548 | -255.978 | 23.111 | -0.257
 |  | 4800 | 59.164 | 313.574 | 265.562 |  | 230.458 | -256.229 | 29.052 | -0.316
 |  | 4900 | 59.275 | 314.795 | 266.554 |  | 236.38 | -256.491 | 34.998 | -0.373
 |  | 5000 | 59.39 | 315.993 | 267.531 |  | 242.313 | -256.763 | 40.949 | -0.428
 |  | 5100 | 59.509 | 317.171 | 268.493 |  | 248.258 | -257.046 | 46.906 | -0.48
 |  | 5200 | 59.628 | 318.327 | 269.44 |  | 254.215 | -257.338 | 52.869 | -0.531
 |  | 5300 | 59.746 | 319.464 | 270.373 |  | 260.184 | -257.639 | 58.838 | -0.58
 |  | 5400 | 59.864 | 320.582 | 271.293 |  | 266.164 | -257.95 | 64.811 | -0.627
 |  | 5500 | 59.982 | 321.682 | 272.199 |  | 272.157 | -258.268 | 70.791 | -0.672
 |  | 5600 | 60.1 | 322.764 | 273.092 |  | 278.161 | -258.595 | 76.777 | -0.716
 |  | 5700 | 60.218 | 323.828 | 273.973 |  | 284.177 | -258.93 | 82.769 | -0.758
 |  | 5800 | 60.335 | 324.877 | 274.841 |  | 290.204 | -259.272 | 88.767 | -0.799
 |  | 5900 | 60.453 | 325.909 | 275.698 |  | 296.244 | -259.621 | 94.77 | -0.839
 |  | 6000 | 60.571 | 326.926 | 276.544 |  | 302.295 | -259.977 | 100.78 | -0.877
 |  | PREVIOUS: March 1961 (1 atm) |  |  |  |  | CURRENT: March 1979 (1 bar)