निम्न अभिक्रिया में `2Fe(s)+O_(2)(g)+4H^(+)(aq)to2Fe^(2+)(aq)+2H_(2)O(l),E^(@)=1.67V" "[Fe^(2+)]=10^(-3)M,P(O_(2))=0.1" atm"` तथा `pH=3,25^(@)C` पर सेल विभव होगा

Options

A. 1.47V
B. 1.77 V
C. 1.87 V
D. 1.57 V

Explanation

`2Fe(s)+O_(2)(g)+4H^(+)(aq)to2Fe^(2+)(aq)+2H_(2)O(l)`
`E_("cell")=E_("cell")^(@)-(0.059)/(n)"log"([Fe^(2+)]^(2))/(P_((O_(2))[H^(+)]^(4)))(becausen=4)`
`E_("cell")=1.67-(0.059)/(4)"log"((10^(-3))^(2))/(0.1xx(10^(-3))^(4))`
`=1.67-0.103=1.567V`