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Topic: Oxidation  (Read 3421 times)

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dk_06

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Oxidation
« on: June 10, 2006, 09:20:22 PM »
Why does 1 mole of magnesium produce 1 mole of hydrogen? (Think of the bonding; your answer must discuss oxidation numbers or electrons.)
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Offline Will

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Re: Oxidation
« Reply #1 on: June 10, 2006, 10:25:21 PM »
You should show that you have attempted to answer the question first (see rules).
A simple way to explain it is by half equations.
Balance these (this website is helpful):
__Mg --> __Mg2+ + __e-
__H+ + __e- --> __H2

Then write the overall equation to show how 1 mole of Mg produces 1 mole of H2.
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Offline Morphic flip

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Re: Oxidation
« Reply #2 on: June 11, 2006, 08:17:36 AM »
I used to remember it by ratio`s of each element/compound.
So if you do as will17   has stated, you`ll get a balanced equation including H2 gas - 1 mole.
1 mole of Mg reacts with 2 moles of H2O to give 1 mole of Mg(OH)2 and 1 mole of H2
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