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An electrochemical cell was needed in which hydrogen and oxygen would react to form water. (a)Using the following standard reduction potentials for the couples given determine which combination of half-reactions give the maximum output potentials: 1)Eo=-0.828V for H2O(l)/H2(g),OH- 2)Eo=0.000V for H+/H2(g) 3)Eo=1.229V for O2(g),H+/H2O(l) 4)Eo=0.401V for O2(g),H2O(l)/OH- (b) Write the balanced equation for the overall reaction in(a) |
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xl1987
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4Â¥2012-09-07 12:20:21
njzhouyiming
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xl1987: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2012-09-07 10:29:11
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xl1987: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2012-09-07 10:29:11
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Solution: (a)The combination of half-reactions 1)4) or 2)3) give the same maximum output potentials 1.229V (b) The balanced equation for the overall reaction in(a)would be 2H2(g)+O2(g)===2H2O(l) |
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2Â¥2012-09-06 11:45:25
smoon0506
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seagrove: ½ð±Ò-1, Ó¦ÖúÖ¸Êý-1, Çë²»Òª¸´ÖÆËûÈ˻ظ´Ó¦Öú 2012-09-06 12:47:48
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seagrove: ½ð±Ò-1, Ó¦ÖúÖ¸Êý-1, Çë²»Òª¸´ÖÆËûÈ˻ظ´Ó¦Öú 2012-09-06 12:47:48
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Solution: (a)The combination of half-reactions 1)4) or 2)3) give the same maximum output potentials 1.229V (b) The balanced equation for the overall reaction in(a)would be 2H2(g)+O2(g)===2H2O(l) |

3Â¥2012-09-06 12:07:34













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