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Standard electrode potentials are : Fe...

Standard electrode potentials are :
`Fe^(2+) "|" Fe (E^(@) = - 0.44 V), Fe^(3+) "|" Fe^(2+) (E^(@) = 0.77 V) Fe^(2+), Fe^(3+)` and Fe blocks are kept together, then

A

`Fe^(3+)` increases

B

`Fe^(3+)` decreases

C

`Fe^(2+)//Fe^(3+)` remains unchanged

D

`Fe^(2+)` decreased

Text Solution

Verified by Experts

The correct Answer is:
B
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Standard electrode potentials are : Fe^(2+)|Fe(E^(@)=-0.44V).Fe^(3+)|Fe^(2+)(E^(@)=0.77V)Fe^(2+).Fe^(3+)andFe blocks are kept tigether , then

E^(@) for a cell having, Fe to Fe^(2+) + 2e, E^(@) = 0.40 V Zn to Zn^(2+) +2e, E^(@) = 0.76 V

Fe^(2+) and Fe^(3+) can be distinguished by :

Which one has the larger size : Fe^(2+) " or " Fe^(3+) ?

Given electrode potentials are , Fe^(3+) + e to Fe^(2+), E^@ = 0.771V " " I_2 + 2e to 2I^(-), E^@ = 0.536 V , E^@ cell for the cell reaction, 2Fe^(3+) + 2I^(-) to 2Fe^(2+) + I_2 is

The standard electrode potentials E^(@) for the half cell reactions are as : ZntoZn^(2+)+2e^(-),E^(@)=0.76V FetoFe^(2+)+2e^(-),E^(@)=041V The EMF of the cell reaction Fe^(2+)+ZntoZn^(2+)+Fe is :

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