1.

For the cell prepared from electrode A and B, electrode A:(Cr_2O_7^(2-))/(Cr^(3+)), E_("red")^(0)=+1.33V and electrode B :(Fe^(3+))/(Fe^(2+)), E_("red")^(0)=0.77 V, which of the following statement is not correct ?

Answer»

The electrons will flow B to A (in the OUTER circuit) when connections are made.
The standard e.m.f. of the CELL with be 0.56 V
A will be POSITIVE electrode
None of the above

Solution :A ACTS as cathode and B acts as anode because reduction potential of A is more.
Anode is B `implies` is NEGATIVE electrode.
`implies` electrons flow from B to A .
`implies` e.m.f=(1.33-0.77) V


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