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| Element: |
ΔfHө
|
J/mol K |
Element: |
ΔfHө
|
J/mol K |
|
| C(graphite) | -- |
5.740 | Ni(s) | -- |
29.9 | |
| C(diamond) | +1.887 | 2.38 | O2(g) | -- |
205.0 | |
| Ca(s) | -- |
41.4 | P4(s) | -- |
41.1( x 4*) | |
| Cl2(g) | -- |
223.0 | P4(g) | +58.91 | 280.0 | |
| Cu(s) | -- |
33.15 | S8(s) | -- |
31.9( x 8*) | |
| F2 (g) | -- |
202.7 | -- |
-- |
||
| Fe(s) | -- |
27.3 | Si(s) | -- |
18.8 | |
| H2(g) | -- |
130.6 | Ti(s) | -- |
30.6 | |
| I2(s) | -- |
116.1 | Zn(s) | -- |
41.6 | |
| N2(g) | -- |
191.5 |
| Aqueous Ions: |
ΔHө
|
J/mol K |
Aqueous Ions: |
ΔHө
|
J/mol K |
|
| Al3+ | -531.0 | -321.7 | HSO4- | -887.3 | +131.8 | |
| Ag+ | +105.6 | +72.68 | I- | -55.2 | +111.3 | |
| Br- | -121.6 | +82.4 | K+ | -252.4 | +102.5 | |
| CO32- | -677.1 | -56.9 | Mg2+ | -466.9 | -138.1 | |
| CH3COO- | -486.0 | 86.6 | Mn2+ | -220.8 | -73.6 | |
| Ca2+ | -542.8 | -53.1 | NH4+ | -132.5 | +113.4 | |
| Cl- | -167.2 | +56.5 | NO2- | -104.6 | +123.0 | |
| Cu2+ | +64.77 | +99.6 | NO3- | -205.0 | +146.4 | |
| F- | -79.50 | -3.3 | Na+ | -240.1 | +59.0 | |
| Fe2+ | -89.1 | -137.6 | OH- | -230.0 | -10.8 | |
| Fe3+ | -48.5 | -315.9 | PO43- | -1277.4 | -199.3 2 | |
| H+ | 0 | 0 | S2- | +33.1 | -14.6 | |
| H2PO4- | -1296.3 | +90.4 | SO42- | -909.3 | +20.1 | |
| HPO42- | -1292.1 | -31.9 1 | Zn2+ | -153.9 | -112.1 |
*If in the reaction you use these elements with a subscript of 1,
i.e. P and S, then do not multiply by 4 or 8. If you use the
subscripts, P4 and S8, multiply the numbers by
4 and 8.
1 Adjusted to give the correct experimental Ka NIST = -33.5 J mol-1 K-1
2 " NIST = -222 J mol-1 K-1