(7) Given: Half cell reaction E° (V) Cd+2(aq) + 2 e--> Cd(s) -0.40 Ag+ (aq) + e ---> Ag(s) + 0.80 Cr+3(aq) + 3 e ---> Cr

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7 Given Half Cell Reaction E V Cd 2 Aq 2 E Cd S 0 40 Ag Aq E Ag S 0 80 Cr 3 Aq 3 E Cr 1 (48.11 KiB) Viewed 46 times

(7) Given: Half cell reaction E° (V) Cd+2(aq) + 2 e--> Cd(s) -0.40 Ag+ (aq) + e ---> Ag(s) + 0.80 Cr+3(aq) + 3 e ---> Cr(s) - 0.74 Mg+2(aq) + 2 e-- ---> Mg(s) - 2.37 ( 18 points) (a) Select two of the above half-cell reactions to build a voltaic cell that would have the maximum cell potential. Write the overall reaction equation and calculate the overall standard cell potential. (b) Draw a detailed cell diagram and indicate which electrode is anode and which is cathode, and indicate the (-) electrode and the (+) electrode. Indicate the direction of the flowing of electrons.