At 25 degree C. Using the value of Delta fG degree [Cr(ao)] given in Table C.2,

Question

At 25 degree C. Using the value of Delta fG degree [Cr(ao)] given in Table C.2, what is the value of Deltaf G degree [AgCl(s)]? 7.50 Consider the following cell. , gt Pt I Cu2+, Cu+ :: Fe2+, Fe3+ | Pt (a) What is the cell reaction? (b) What is the standard electromotive force of the cell at 298.15 K? (c) Calculate ArG degree for the cell reaction from the standard electromotive force. ( ) Calculate ArG degree for the cell reaction using the AfG degree values for the ions in Table C.2. ( e) Calculate ArG degree for the cell reaction using the AfH degree values and S^degree values in Table C.2. The electrode potential for the electrode Cl- | Cl2(g) | Pt is given by .. . . ,

Explanation / Answer

1) anode :   Cu+1    ---------->    Cu+2    + e

   cathode :       Fe+3     + e     ----------->   Fe+2

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overall           Cu+1 + Fe+3 ---------->    Cu+2    + Fe+2

2)    Eocell   = EoCu+2/Cu+1 + EoFe+2/Fe+3 =-0.15 + 0.77 = 0.62 V

3)   Go = -nFEocell = -1x96500x0.62 = -59830 joules

There are 5 parts , i have solved 3 parts, the remaining questions require data

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