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    If the normal cell potential is 1.45 Volts, for the recharging reaction, is it still 1.45 or is it -1.45 v?
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    (Original post by popo111)
    If the normal cell potential is 1.45 Volts, for the recharging reaction, is it still 1.45 or is it -1.45 v?
    For the recharging reaction to occur you must apply a potential larger than the discharging potential. You are forcing the non-spontaneous reaction to proceed.
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    (Original post by charco)
    For the recharging reaction to occur you must apply a potential larger than the discharging potential. You are forcing the non-spontaneous reaction to proceed.
    Oh I see, so it would be larger than 1.45 V (if the cell potential was 1.45) ?
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    (Original post by charco)
    For the recharging reaction to occur you must apply a potential larger than the discharging potential. You are forcing the non-spontaneous reaction to proceed.
    Another quick question, if you have a complex ion with 2 same bidendate ligand, and one different bidendate ligand (eg : 2 en ligands and 1 C204 2- ligand), can this form a cis isomer as the 2 carbons in the C204 2- ion are same side/ together, thus cis isomer?
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    (Original post by popo111)
    Another quick question, if you have a complex ion with 2 same bidendate ligand, and one different bidendate ligand (eg : 2 en ligands and 1 C204 2- ligand), can this form a cis isomer as the 2 carbons in the C204 2- ion are same side/ together, thus cis isomer?
    No, octahedral complexes such as this [Co(en)3]2+ are three dimensional structures. If you replace one of the 'en' groups by something else there is only one isomer.
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    (Original post by popo111)
    Oh I see, so it would be larger than 1.45 V (if the cell potential was 1.45) ?
    Take a car battery. There are 6 cells each of which provided 2.2V. To recharge the battery you need to apply an opposite potential of over 13.2 V.
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    (Original post by charco)
    No, octahedral complexes such as this [Co(en)3]2+ are three dimensional structures. If you replace one of the 'en' groups by something else there is only one isomer.
    Oh okay then, I see. I guess this answers one other question I had, is the term octahedral used for 6 coordinate bonds or 6 ligands? I now assume it's coordinate bonds?

    Thanks alot .
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    (Original post by popo111)
    Oh okay then, I see. I guess this answers one other question I had, is the term octahedral used for 6 coordinate bonds or 6 ligands? I now assume it's coordinate bonds?

    Thanks alot .
    Yes, six coordination state ..
    EDTA is hexadentate and the complex is octahedral.
 
 
 
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