Calculate the equilibrium constant for the reaction: 2 Cr + 3 Pb2+ > 3 Pb + 2 Cr3+ at 25oC. Eocell = 0.61 V

The value is  

Explanation:

From the question we are told that

    The equation is  

     The  temperature is  

     The  emf at standard condition is  

Generally at the cathode

  At the anode

Generally for an  electrochemical reaction, at room temperature the Gibbs free energy is mathematically represented as  

Here  n  is  the no of electron  with value n = 6

       F  is  the Faraday's constant with value 96487 J/V

  =>  

  =>  

This Gibbs free energy can also be represented mathematically as

Here  R  is the cell constant with value 8.314J/K

           K is the equilibrium constant

From above

=>  

Generally  antilog =  2.718

=>

=>  

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