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Thread: daniell cell & ammonium hydroxide!

  1. #1 daniell cell & ammonium hydroxide! 
    Forum Freshman lynnity's Avatar
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    hey guys. recently i came across an article on the net that mentioned adding ammonium hydroxide to the copper(II) sulphate in a daniell cell (comprising of copper & zinc electrodes and copper&zinc sulphate electrolytes) will cause a precipitation of copper hydroxide which will in turn increase the voltage across the cell. Why is it so? other than that particular site, i can't seem to find any other sites explaining this phenomenon so how true is that site? thanks for your help! (:


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  3. #2 Re: daniell cell & ammonium hydroxide! 
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    Quote Originally Posted by lynnity
    hey guys. recently i came across an article on the net that mentioned adding ammonium hydroxide to the copper(II) sulphate in a daniell cell (comprising of copper & zinc electrodes and copper&zinc sulphate electrolytes) will cause a precipitation of copper hydroxide which will in turn increase the voltage across the cell. Why is it so? other than that particular site, i can't seem to find any other sites explaining this phenomenon so how true is that site? thanks for your help! (:
    In case, it's the opposite: you should have the minimum concentration of Zn<sup>++</sup> ions in the semicell with Zn and the maximum conc. of Cu<sup>++</sup> ions in the other.


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  4. #3  
    Forum Freshman lynnity's Avatar
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    but why is it so? can't seem to figure it out
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  5. #4  
    Forum Freshman lynnity's Avatar
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    i kind of managed to reason it out so i guess the topic can be closed. hah
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