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µoªí©ó¡G Jan 24 2006, 11:27 ¡@
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¥»½g¤å³¹¤w³Q ªüåÈ ©ó Jan 24 2006, 13:43 ½s¿è¹L


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µoªí©ó¡G Jan 24 2006, 12:20 ¡@
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µoªí©ó¡G Jan 24 2006, 13:34 ¡@
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QUOTE (ªüåÈ @ Jan 24 2006, 07:27 PM)
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¥»½g¤å³¹¤w³Q ¡i¹p¡j ©ó Jan 24 2006, 13:57 ½s¿è¹L
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µoªí©ó¡G Jan 24 2006, 13:43 ¡@
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QUOTE
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²¸¤Æ²B H2S §a...

__________________________________________________

§Ú¤§«e¤]·Q¹L¬O H2SO4 ¡÷ H2S ªº , ¦ý H2SO4ªº S ªº oxidation state ¬O +VI, ¦Ó H2S ªº S ªºoxidation state ¬O -II, ªÅ®ðùØ¥i¨S¦³³o»ò±jªº reducing agent §r...


¦L¶H¤¤·|¦Ò¦³±Ð·|¥X H2S ªº¤ÏÀ³¥u¦³

I- + H2SO4 ¡÷ HSO4- + HI
8HI + H2SO4 ¡÷ 4H2O + H2S + 4I2

¥t¥~¬d¹L:

For such small-scale laboratory use, H2S was made as needed in a Kipp generator by reaction of sulfuric acid H2SO4 with ferrous sulfide FeS.

Small amounts of hydrogen sulfide occur in crude petroleum but natural gas can contain up to 28%. Volcanoes and hot springs emit some H2S, where it probably arises via the hydrolysis of sulfide minerals, i.e. MS + H2O to give MO + H2S

¥»½g¤å³¹¤w³Q ªüåÈ ©ó Jan 24 2006, 15:18 ½s¿è¹L


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µoªí©ó¡G Jan 24 2006, 14:24 ¡@
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QUOTE (ªüåÈ @ Jan 24 2006, 09:43 PM)

§Ú¤§«e¤]·Q¹L¬O H2SO4 ¡÷ H2S ªº , ¦ý H2SO4ªº S ªº oxidation state ¬O +VI, ¦Ó H2S ªº S ªºoxidation state ¬O -II, ªÅ®ðùØ¥i¨S¦³³o»ò±jªº reducing agent §r...


¦L¶H¤¤·|¦Ò¦³±Ð·|¥X H2S ªº¤ÏÀ³¥u¦³

I- + H2SO4 ¡÷ HSO4- + HI
8HI + H2SO4 ¡÷ 4H2O + H2S + 4I2

¥t¥~¬d¹L:

For such small-scale laboratory use, H2S was made as needed in a Kipp generator by reaction of sulfuric acid H2SO4 with ferrous sulfide FeS.

Small amounts of hydrogen sulfide occur in crude petroleum but natural gas can contain up to 28%. Volcanoes and hot springs emit some H2S, where it probably arises via the hydrolysis of sulfide minerals, i.e. MS + H2O to give MO + H2S

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¥»½g¤å³¹¤w³Q ¡i¹p¡j ©ó Jan 24 2006, 14:32 ½s¿è¹L
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ªüåÈ
µoªí©ó¡G Jan 24 2006, 14:45 ¡@
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µoªí¼Æ¡G 5,279
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QUOTE
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³oÀ³¸Ó¬OÃþ¦ü¨ä¥Lmetal ªº MS + H2O ¡÷ H2S + MO §a.


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