Thread: daniell cell & ammonium hydroxide!

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! (:

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⁺⁺ ions in the semicell with Zn and the maximum conc. of Cu⁺⁺ ions in the other.

but why is it so? can't seem to figure it out

i kind of managed to reason it out so i guess the topic can be closed. hah