J.4 Hydroxyl ion, OH–(g)
\[\dfrac{1}{2}\mathrm{H_2}(g) + \dfrac{1}{2}\mathrm{O_2}(g) \longrightarrow \mathrm{OH^-}(g)\]
Data
Enthalpy reference temperature (Tr = 298.15 K); Standard state pressure = p° = 0.1 MPa
- C°p, S°, and -[G°-H°(Tr)]/T in J mol–1 K–1
- ΔH°f and ΔG°f in kJ mol–1
T (K) | C°p | S° | –[G°-H°(Tr)]/T | H° -H°(Tr) | ΔH°f | ΔG°f | log Kf |
---|---|---|---|---|---|---|---|
0 | 0 | 0 | INFINITE | -8.606 | -137.429 | ||
100 | 29.127 | 140.647 | 198.369 | -5.772 | |||
200 | 29.13 | 160.836 | 175.134 | -2.86 | |||
250 | 29.135 | 167.336 | 172.948 | -1.403 | |||
298.15 | 29.141 | 172.469 | 172.469 | 0 | -143.595 | -138.698 | 24.299 |
300 | 29.141 | 172.649 | 172.469 | 0.054 | -143.633 | -138.668 | 24.144 |
350 | 29.148 | 177.141 | 172.824 | 1.511 | -144.678 | -137.758 | 20.559 |
400 | 29.157 | 181.034 | 173.612 | 2.969 | -145.736 | -136.697 | 17.851 |
450 | 29.17 | 184.469 | 174.631 | 4.427 | -146.806 | -135.503 | 15.729 |
500 | 29.194 | 187.543 | 175.772 | 5.886 | -147.888 | -134.189 | 14.019 |
600 | 29.289 | 192.873 | 178.191 | 8.809 | -150.087 | -131.244 | 11.426 |
700 | 29.471 | 197.401 | 180.62 | 11.747 | -152.325 | -127.927 | 9.546 |
800 | 29.749 | 201.353 | 182.97 | 14.707 | -154.588 | -124.287 | 8.115 |
900 | 30.108 | 204.877 | 185.211 | 17.699 | -156.864 | -120.363 | 6.986 |
1000 | 30.525 | 208.07 | 187.34 | 20.73 | -159.145 | -116.185 | 6.069 |
1100 | 30.975 | 211.001 | 189.36 | 23.805 | -161.422 | -111.779 | 5.308 |
1200 | 31.439 | 213.716 | 191.278 | 26.926 | -163.694 | -107.165 | 4.665 |
1300 | 31.9 | 216.25 | 193.102 | 30.093 | -165.957 | -102.363 | 4.113 |
1400 | 32.347 | 218.631 | 194.841 | 33.305 | -168.212 | -97.386 | 3.634 |
1500 | 32.773 | 220.877 | 196.503 | 36.562 | -170.459 | -92.249 | 3.212 |
1600 | 33.176 | 223.005 | 198.093 | 39.859 | -172.7 | -86.962 | 2.839 |
1700 | 33.553 | 225.028 | 199.619 | 43.196 | -174.934 | -81.535 | 2.505 |
1800 | 33.904 | 226.956 | 201.084 | 46.569 | -177.165 | -75.976 | 2.205 |
1900 | 34.23 | 228.798 | 202.495 | 49.976 | -179.392 | -70.294 | 1.933 |
2000 | 34.532 | 230.561 | 203.855 | 53.414 | -181.619 | -64.494 | 1.684 |
2100 | 34.812 | 232.253 | 205.167 | 56.881 | -183.846 | -58.583 | 1.457 |
2200 | 35.072 | 233.879 | 206.435 | 60.376 | -186.074 | -52.566 | 1.248 |
2300 | 35.312 | 235.443 | 207.663 | 63.895 | -188.304 | -46.448 | 1.055 |
2400 | 35.536 | 236.951 | 208.852 | 67.438 | -190.537 | -40.232 | 0.876 |
2500 | 35.744 | 238.406 | 210.005 | 71.002 | -192.774 | -33.924 | 0.709 |
2600 | 35.938 | 239.811 | 211.124 | 74.586 | -195.015 | -27.525 | 0.553 |
2700 | 36.119 | 241.171 | 212.212 | 78.189 | -197.261 | -21.041 | 0.407 |
2800 | 36.288 | 242.488 | 213.27 | 81.809 | -199.513 | -14.473 | 0.27 |
2900 | 36.447 | 243.764 | 214.3 | 85.446 | -201.771 | -7.825 | 0.141 |
3000 | 36.596 | 245.002 | 215.303 | 89.098 | -204.034 | -1.098 | 0.019 |
3100 | 36.737 | 246.204 | 216.28 | 92.765 | -206.304 | 5.704 | -0.096 |
3200 | 36.87 | 247.373 | 217.234 | 96.446 | -208.58 | 12.579 | -0.205 |
3300 | 36.996 | 248.509 | 218.164 | 100.139 | -210.862 | 19.525 | -0.309 |
3400 | 37.115 | 249.616 | 219.073 | 103.844 | -213.151 | 26.541 | -0.408 |
3500 | 37.228 | 250.693 | 219.961 | 107.562 | -215.447 | 33.624 | -0.502 |
3600 | 37.336 | 251.743 | 220.83 | 111.29 | -217.75 | 40.773 | -0.592 |
3700 | 37.439 | 252.768 | 221.679 | 115.029 | -220.059 | 47.986 | -0.677 |
3800 | 37.538 | 253.768 | 222.51 | 118.778 | -222.375 | 55.262 | -0.76 |
3900 | 37.632 | 254.744 | 223.324 | 122.536 | -224.698 | 62.599 | -0.838 |
4000 | 37.723 | 255.698 | 224.122 | 126.304 | -227.027 | 69.995 | -0.914 |
4100 | 37.81 | 256.63 | 224.903 | 130.081 | -229.364 | 77.449 | -0.987 |
4200 | 37.894 | 257.542 | 225.67 | 133.866 | -231.708 | 84.961 | -1.057 |
4300 | 37.975 | 258.435 | 226.421 | 137.659 | -234.058 | 92.528 | -1.124 |
4400 | 38.053 | 259.309 | 227.159 | 141.461 | -236.416 | 100.15 | -1.189 |
4500 | 38.129 | 260.165 | 227.883 | 145.27 | -238.781 | 107.826 | -1.252 |
4600 | 38.203 | 261.004 | 228.594 | 149.086 | -241.153 | 115.554 | -1.312 |
4700 | 38.274 | 261.826 | 229.292 | 152.91 | -243.533 | 123.335 | -1.371 |
4800 | 38.344 | 262.633 | 229.978 | 156.741 | -245.92 | 131.166 | -1.427 |
4900 | 38.411 | 263.424 | 230.653 | 160.579 | -248.315 | 139.047 | -1.482 |
5000 | 38.477 | 264.201 | 231.316 | 164.423 | -250.717 | 146.977 | -1.535 |
5100 | 38.541 | 264.963 | 231.968 | 168.274 | -253.127 | 154.954 | -1.587 |
5200 | 38.604 | 265.712 | 232.61 | 172.132 | -255.545 | 162.979 | -1.637 |
5300 | 38.666 | 266.448 | 233.242 | 175.995 | -257.97 | 171.051 | -1.686 |
5400 | 38.726 | 267.172 | 233.863 | 179.865 | -260.405 | 179.168 | -1.733 |
5500 | 38.785 | 267.883 | 234.475 | 183.74 | -262.847 | 187.331 | -1.779 |
5600 | 38.843 | 268.582 | 235.078 | 187.622 | -265.297 | 195.539 | -1.824 |
5700 | 38.9 | 269.27 | 235.672 | 191.509 | -267.756 | 203.789 | -1.868 |
5800 | 38.955 | 269.947 | 236.257 | 195.402 | -270.224 | 212.084 | -1.91 |
5900 | 39.01 | 270.613 | 236.834 | 199.3 | -272.7 | 220.42 | -1.951 |
6000 | 39.064 | 271.27 | 237.402 | 203.204 | -275.186 | 228.799 | -1.992 |