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Chem Redox 一問 [復制鏈接]

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離線Mr-Brian
 
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只看樓主 倒序閱讀 使用道具 樓主   發表于: 2008-12-12
Sodium sulphite solution is added to iron(III) sulphate solution ,state an expected observation and write an equation for the equation involved.

My method:
Half equation
Fe(III) ion +1electron => Fe(II) ion
Sulphite ion +Water => Sulphate ion + 2 H ion + 2 Electrons

Overall equation
2Fe(III) ion + Water + Sulphite ion => 2Fe (II) ion + Sulphate ion + 2H ion

Chemical equation
Sodium sulphite + iron(III) sulphate => Iron (II) sulphate + Sodium Sulphate

answer of Chemical equation is
Sodium sulphite + iron(III) sulphate => Sodium Sulphate + Iron Sulphite

唔知點解由redox睇好似同用double decompostion 睇好似唔同d咁
[ 本文被古川•路奇在2008-12-12 23:45重新編輯 ]