Iron, Ion (Fe-) Fe1-(g)
 
Enthalpy Reference Temperature = Tr = 298.15 K Standard State Pressure = p° = 0.1 MPa
  J·K-1 mol-1 kJ·mol-1  
T/K Cp° S° -[G°-H°(Tr)]/T H-H°(Tr) fH° fG° log Kf
0 0. 0. INFINITE -6.642 397.400    
100 20.957 155.485 201.095 -4.561      
200 23.092 170.579 182.433 -2.371      
250 24.226 175.858 180.606 -1.187      
 
298.15 25.023 180.198 180.198 0. 393.338 354.013 -62.022
 
300 25.047 180.353 180.198 0.046 393.300 353.769 -61.597
350 25.536 184.254 180.505 1.312 392.240 347.264 -51.826
400 25.748 187.681 181.193 2.595 391.142 340.913 -44.519
450 25.758 190.716 182.085 3.884 389.994 334.703 -38.851
500 25.632 193.424 183.086 5.169 388.784 328.624 -34.331
 
600 25.172 198.059 185.208 7.710 386.162 316.833 -27.583
700 24.627 201.899 187.327 10.201 383.247 305.505 -22.797
800 24.108 205.153 189.357 12.637 379.990 294.616 -19.236
900 23.652 207.965 191.272 15.024 376.271 284.162 -16.492
1000 23.264 210.437 193.067 17.370 371.790 274.158 -14.321
 
1100 22.938 212.638 194.748 19.679 366.378 264.671 -12.568
1200 22.666 214.622 196.323 21.959 361.489 255.621 -11.127
1300 22.438 216.427 197.801 24.214 358.222 246.930 -9.922
1400 22.246 218.083 199.191 26.448 354.851 238.495 -8.898
1500 22.084 219.612 200.502 28.664 351.377 230.305 -8.020
 
1600 21.946 221.033 201.742 30.865 347.806 222.349 -7.259
1700 21.829 222.360 202.916 33.054 343.188 214.639 -6.595
1800 21.727 223.604 204.031 35.232 339.090 207.195 -6.013
1900 21.640 224.777 205.092 37.400 320.802 200.683 -5.517
2000 21.563 225.885 206.105 39.560 316.281 194.478 -5.079
 
2100 21.496 226.935 207.072 41.713 311.753 188.499 -4.689
2200 21.438 227.934 207.997 43.860 307.218 182.736 -4.339
2300 21.386 228.885 208.885 46.001 302.678 177.179 -4.024
2400 21.340 229.795 209.738 48.137 298.134 171.820 -3.740
2500 21.299 230.665 210.557 50.269 293.585 166.651 -3.482
 
2600 21.262 231.500 211.347 52.397 289.032 161.663 -3.248
2700 21.229 232.301 212.108 54.521 284.475 156.851 -3.034
2800 21.199 233.073 212.843 56.643 279.916 152.208 -2.839
2900 21.173 233.816 213.554 58.761 275.353 147.727 -2.661
3000 21.148 234.534 214.241 60.877 270.788 143.404 -2.497
 
3100 21.126 235.227 214.907 62.991 266.221 139.233 -2.346
3200 21.106 235.897 215.553 65.103 -86.649 142.634 -2.328
3300 21.088 236.546 216.179 67.212 -89.319 149.840 -2.372
3400 21.071 237.176 216.787 69.320 -92.024 157.128 -2.414
3500 21.055 237.786 217.379 71.427 -94.765 164.495 -2.455
 
3600 21.041 238.379 217.954 73.531 -97.540 171.942 -2.495
3700 21.028 238.955 218.514 75.635 -100.352 179.466 -2.534
3800 21.015 239.516 219.059 77.737 -103.201 187.067 -2.571
3900 21.004 240.062 219.590 79.838 -106.088 194.743 -2.608
4000 20.993 240.593 220.109 81.938 -109.013 202.494 -2.644
 
4100 20.984 241.112 220.615 84.037 -111.977 210.318 -2.679
4200 20.975 241.617 221.109 86.134 -114.982 218.215 -2.714
4300 20.966 242.111 221.592 88.232 -118.028 226.184 -2.748
4400 20.958 242.593 222.063 90.328 -121.116 234.225 -2.781
4500 20.951 243.063 222.525 92.423 -124.248 242.336 -2.813
 
4600 20.944 243.524 222.976 94.518 -127.424 250.517 -2.845
4700 20.937 243.974 223.418 96.612 -130.645 258.768 -2.876
4800 20.931 244.415 223.851 98.705 -133.913 267.088 -2.907
4900 20.925 244.846 224.275 100.798 -137.228 275.476 -2.937
5000 20.920 245.269 224.691 102.890 -140.592 283.933 -2.966
 
5100 20.915 245.683 225.099 104.982 -144.006 292.457 -2.995
5200 20.910 246.089 225.498 107.073 -147.472 301.049 -3.024
5300 20.905 246.488 225.891 109.164 -150.990 309.708 -3.052
5400 20.901 246.878 226.276 111.255 -154.563 318.434 -3.080
5500 20.897 247.262 226.654 113.344 -158.191 327.226 -3.108
 
5600 20.893 247.638 227.025 115.434 -161.878 336.085 -3.135
5700 20.890 248.008 227.390 117.523 -165.626 345.011 -3.162
5800 20.886 248.371 227.749 119.612 -169.435 354.003 -3.188
5900 20.883 248.728 228.101 121.700 -173.309 363.060 -3.214
6000 20.880 249.079 228.448 123.788 -177.250 372.184 -3.240
 
PREVIOUS: March 1978 (1 atm) CURRENT: June 1984 (1 bar)
 
Iron, Ion (Fe-) 0.877 0.877e1-(g)

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