S and H2O Reaction
S and H2O Reaction
(OP)
Will Steam (H2O) and sulfur react to produce H2S and Oxygen? Anybody have a chart showing the reaction chemistry at different temperatures?
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RE: S and H2O Reaction
H2O(g) + S(s) = H2S(g) + 1/2 O2(g)
ΔGRxn, 298 K = -33.4 - (-228.6) kJ/mole
= +195.2 kJ/mole
But, you can burn H2S(g) with O2 to form SO2 + H2O which forms sulfurous acid H2SO3 which can be oxidized to sulfuric acid, H2SO4.
RE: S and H2O Reaction
RE: S and H2O Reaction
In presence of an alkali to remove H2S, it appears that steam at high pressures can reduce sulfur.
See
www.iapws.jp/Proceedings/Symposium05/365Lin.pdf
RE: S and H2O Reaction
Thanks for the link. But, sulfate forms, not O2.
In the Frasch process, steam is pumped into underground deposits in order to extract liquid elemental sulfur.
H2S hardly reacts with hot water under usual conditions:
H2S in hot water even with chlorination system
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