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[" 22."Cr(2)O(7)^(-2)+14H^(+)+6Fe^(-2)ra...

[" 22."Cr_(2)O_(7)^(-2)+14H^(+)+6Fe^(-2)rarr2Cr^(-1)+6Fe^(-3)+7H_(2)O],[" Given ":E^(0)(Cr_(2)O_(7)^(-2),H^(+),2Cr^(+3)/Pt)=1.33V],[(Fe^(+3),Fe^(+2)/Pt)=+0.77V" at "298K],[" Upon discharge of the cell for "80" min at one "],[" ampere,the anode was found to have "],[" decreased in mass by "],[[" (A) "5.4g," (B) "10.8g," (C) "8.2g," (D) zero "]]

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Cr_(2)O_(7)^(-2)+14H^(+)+6Fe^(+2)rarr2Cr^(+3)+6Fe^(+3)+7H_(2)O Given : E^(@)(Cr_(2)O_(7)^(-2),H^(+),2Cr^(+3)//Pt)=1.33V , (Fe^(+3),Fe^(+2)//Pt)=+0.77V at 298 K Upon discharge of the cell for 80 min at one ampere, the anode was found to have decreased in mass by

Fe^(2+)(aq.)+Cr_(2)O_(7)^(2-)+H^(+) to Fe^(3+)(aq.)+Cr^(3+)

Fe^(2+)(aq.)+Cr_(2)O_(7)^(2-)+H^(+) to Fe^(3+)(aq.)+Cr^(3+)

Cr_(2)O_(7)^(2-) + I^(-) rarr I_(2)+Cr^(3+) E_(cell)^(@)=0.79V,E_(Cr_(2)O_(7)^(2-))^(@)=1.33V . Then E_(I_(2))^(@)=?