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(Solved): The cell potential of the cell is 0.60V measured at 30degC. The half reaction ofthe cell is Cr|Cr an ...
The cell potential of the cell is 0.60V measured at 30degC. The half reaction of
the cell is Cr|Cr and Ni?Ni and the (Nj'2] is 2.40M. Determine the (a) half cell
reaction at the anode; (b) half cell reaction at the cathode; (c) overall cell
reaction; (d) the standard cell potential; (e) spontaneity; (f) the concentration of
chromium ion; (g) the free energy (remember the free energy is related to
standard cell potential); and (h) complete cell notation. The standard reduction
potential for chromium and ion are -0.74V and -0.24V respectively.
Solution: A) Half cell reaction at anode is oxidation. It is written as, Cr (s) -----> Cr^3+(aq) + 3e- B) Half cell reaction at cathode is reduction. It is written as, Ni2+(aq) + 2e- ----> Ni(s) C) Multiplying oxidation equation by 2 and re