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xl1987

木虫 (正式写手)

[求助] 求助一道英文题

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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【答案】应助回帖

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xl1987: 金币+20, ★★★★★最佳答案 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)

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2楼2012-09-06 11:45:25
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smoon0506

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大师

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感谢参与,应助指数 +1
seagrove: 金币-1, 应助指数-1, 请不要复制他人回复应助 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)
每天都学习一点点,每天都进步一点点。
3楼2012-09-06 12:07:34
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xl1987

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送鲜花一朵
引用回帖:
2楼: 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( ...

不好意思,我想给你金币。但是系统说“我的类别无法进行此操作。。”
4楼2012-09-07 12:20:21
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njzhouyiming

铁杆木虫 (著名写手)

3Q
5楼2012-09-16 06:10:21
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