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(a) Find the value of deltaG^circ at 25^...

(a) Find the value of `deltaG^circ` at `25^circ` for the following electrochemical cell. `Cu|Cu^2+ 9(1M) Ag ( 1M) Ag`
Write the equation of anodic and cathodic reaction occur during rusting of iron. (i) At Anode :- `2Fe to 2Fe^2+ +4e^-`
(ii) At Cathod :- `O_2+4H ^+ 4e ^- to 2H_2O. `

Text Solution

Verified by Experts

` E_(cell)^E_(cell)^circ` = `E^circ R-E_(l)^circ = 0.34= 0.46V`
`Delta G^circ` =`nF E^circ =-2xx 96,487 xx 1.14 = -2 xx 96,487 xx 0.46 = -88768.04j`.
(i) At Anode :`- 2Fe to 2Fe^2+ +4e`
(ii) At Cathod :- `O_2 + 4H^+ 4e to 2H_2O`.
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