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  • Help me answer: Standard eletrode potential for Sn4+/ Sn2+ couple is +0.15 V and that for the Cr3+/ Cr couple is -0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be:

Standard eletrode potential for Sn4+/ Sn2+ couple is +0.15 V and that for the Cr3+/ Cr couple is -0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be:

  • Option 1)

    +1.19 V

  • Option 2)

    +0.89 V

  • Option 3)

    +0.18 V

  • Option 4)

    +1.83 V

 

Answers (1)

best_answer

 

Anode -

In a galvanic cell, the half cell in which oxidation takes place is called anode.

-

 

 E^{\circ}_{cell} =E^{\circ}_{cathode}-E^{\circ}_{anode}

=0.15-(-0.74) =0.89 V


Option 1)

+1.19 V

This is incorrect option

Option 2)

+0.89 V

This is correct option

Option 3)

+0.18 V

This is incorrect option

Option 4)

+1.83 V

This is incorrect option

Posted by

Plabita

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