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xl1987

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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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njzhouyiming

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xl1987: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2012-09-07 10:29:11
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)

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

2Â¥2012-09-06 11:45:25
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smoon0506

ľ³æ (ÕýʽдÊÖ)

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seagrove: ½ð±Ò-1, Ó¦ÖúÖ¸Êý-1, Çë²»Òª¸´ÖÆËûÈ˻ظ´Ó¦Öú 2012-09-06 12:47:48
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)
ÿÌ춼ѧϰһµãµã£¬Ã¿Ìì¶¼½ø²½Ò»µãµã¡£
3Â¥2012-09-06 12:07:34
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xl1987

ľ³æ (ÕýʽдÊÖ)

ËÍÏÊ»¨Ò»¶ä
ÒýÓûØÌû:
2Â¥: Originally posted by njzhouyiming at 2012-09-06 11:45:25
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( ...

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4Â¥2012-09-07 12:20:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

njzhouyiming

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

3Q
5Â¥2012-09-16 06:10:21
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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