1.

The standar reduction potentials of Zn^(2+)|Zn,Cu^(2+)||Cu^(2+)|Cu| Zn |Zn^(2+)||Ag^(+)|AgIIICu|Cu^(2+)||Ag^(+)|Ag What is the correctorder of E_(cell)^(@)of thesecells ?

Answer»

`II gt IIII`
`IIgtIgtIII`
`IgtIIgtIII`
`IIIgtIgtII`

SOLUTION :Given `Zn^(2+) rarrr Zn`
`CU^(2+) rarr Cu`
`Ag^(+) rarr Ag`
Cell reaction of Iis `Zn + Cu^(2+) rarr Zn^(2+) +Cu`
`E_(cell)^(@)=E_("oxidation" + E_("reduction")=+0.76 +0.34 =+1.10 V `
cellreactionof (III)is `Cu+Ag^(+) rarr Cu^(2+) +Ag`
`E_(cell)^(@) =- 0.34 +0.8 =+0.46 V`
So the correct order of `E_(Cell)^(@)` of these CELLIS `IIGT IgtIII`


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