For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g) . E∘=0.483 V what is the cell potential at 25 ∘C if the concentrations are [Co3+]= 0.173 M , [Co2+]= 0.433 M , and [Cl−]= 0.306 M , and the pressure of Cl2 is PCl2= 9.00 atm ?

Explanation:

The given data is as follows.

      = 0.483,     = 0.173 M,

      = 0.433 M,     = 0.306 M,

      = 9.0 atm

According to the ideal gas equation, PV = nRT

or,             P =    

Also, we know that

                Density =

So,         P = MRT

and,          M =

                    =

                    =

                    = 0.368 mol/L

Now, we will calculate the cell potential as follows.

          E =

             =

             =

             =

             =  0.483 - 0.0185

             = 0.4645 V

Thus, we can conclude that the cell potential of given cell at is 0.4645 V.