1.

Which of the following cell is concentration cell ?

Answer»

`Cu_((S))|Cu_((aq,1M))^(2+)||Cu_((aq,1M))^(2+)|Cu_((S))`
`Zn_((S))|Zn_((aq,0.5M))^(2+)||Cu_((aq,0.1M))^(2+)|Cu_((S))`
`Cu_((S))|Cu_((aq,0.5M))^(2+)||Cu_((aq,0.5M))^(2+)||Cu_((S))`
`""^(Theta)PT|H_(2_((g,1" bar")))|HCl_((aq,0.002M))||HCl_((aq,0.005M))|H_(2_((g,1" bar")))|Pt^(o+)`

Solution :`""^(Theta)Pt|H_(2_((g,1" bar")))|HCl_((aq,0.002M))||HCl_((aq,0.005M))|H_(2_((g,1" bar")))|Pt^(o+)`


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