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Are my equations for magnesium in copper aqueous solution correct? watch

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    I just want to know if the following makes any sense. If it doesn, what am I doing wrong?

    Oxidation: Mg(s) → Mg2+(aq) +*2e

    Reduction: Cu2+(aq) + 2e → Cu(s)

    Balanced equation: 2 Cu3+(aq) + Mg(s) → 2 Cu(s) + 2 Mg2+(aq)

    Thanks guys in advance!
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    (Original post by daiigou)
    no
    And what am I doing wrong?
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    Where did the cu3+ come from and why do you need to put numbers in front when the electrons are already balanced?
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    Cu2+ (aq) + Mg (s) = Cu(s) + Mg 2+(aq)
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    (Original post by C_Yap)
    Where did the cu3+ come from and why do you need to put numbers in front when the electrons are already balanced?

    Ah, the 3+ was a typo, I meant to say 2+ whether that is correct or not, so:

    Cu2+(aq) + Mg(s) → Cu(s) + Mg2+(aq)?

    This is literally my first time doing anything like this. I am a MAJOR novice at this.
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    (Original post by daiigou)
    Cu2+ (aq) + Mg (s) = Cu(s) + Mg 2+(aq)
    Ah, thanks! I am not sure where those numbers came from! I probably forgot to delete them as I copied another balanced equation for a template (so I don't forget where things go). Much appreciated, daiigou and C_Yap!
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    (Original post by Moribundus)
    Ah, thanks! I am not sure where those numbers came from! I probably forgot to delete them as I copied another balanced equation for a template (so I don't forget where things go). Much appreciated, daiigou and C_Yap!
    It is always a good idea to proof-read your own work, PARTICULARLY in exams.

    Nay, more than a good idea, it is essential.
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    (Original post by charco)
    It is always a good idea to proof-read your own work, PARTICULARLY in exams.

    Nay, more than a good idea, it is essential.
    I always proofread my work on assignments and exams but I sometimes fail to do so when I am working on problems like this. I would have noticed my error eventually before I submitted my coursework but I am glad that others noticed it before me and I am chuffed that my equations are right when my typing errors were removed.

    The only reason I was asking if my equations were correct is because this is literally the first time I have done something like this, so it is actually hard for me to proofread this especially as I missed out on studying redox reactions due to illness and had to pretty much use an educated guess to formulate the equations.
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    I assume you didn't proof read that response either because there are a few errors. You should really take more care.
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    (Original post by daiigou)
    I assume you didn't proof read that response either because there are a few errors. You should really take more care.
    No, I do not bother proofreading informal replies. Also you should have proofread your first reply as you forgot to capitalise the n in ''no'' and you missed out a full stop at the end of your exceedingly short sentence.
 
 
 
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