CBSE Class 12 Chemistry 2023 Delhi Set 1 Solved Paper

Question : 3

Total: 35

A voltaic cell is made by connecting two half cells represented by half equations below:
Sn(aq)2++2e−→Sn(s)E° =−0.14V
Fe3+‌(aq )+e−→Fe(aq )2+E° =+0.77V

Fe2+ is oxidised and the voltage of the cell is
−0.91V
Sn is oxidised and the voltage of the cell is 0.91V
Fe2+ is oxidised and the voltage of the cell is 0.91V
Sn is oxidised and the voltage of the cell is 0.63V

Solution: 👈: Video Solution

Explanation: Sn is oxidized as it is having -ve value of electrode potential.
E°=Ec−Ea
=0.77(−0.14)
=0.91V

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