1.

In a galvanic cell the following reaction takes place at 298^(@)K Cr_(2)O_(7)^(2-)+14H^(+)+6Fe^(2+)to2Cr^(3+)+6Fe^(3+)+7H_(2)O given that :E^(o)(Cr_(2)O_(7)^(2-),H^(+),Cr^(3+)//Pt)=1.33V E^(o)(Fe^(3+),Fe^(2+)//Pt)=0.77V. The standard e.m.f. of the cell is

Answer»

(1.33+0.77)V
(1.33-0.77)V
`-(1.33+0.77)V`
`(-1.33+0.77)V`

ANSWER :B


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