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Chrome File Edit View History Bookmarks People window Help A CA1 12% Wed Apr 19 8:54 PM kaycee rae a E Mastering Chemistry: CH 18 HW TO DO FOI Make pat Secure https Session masteringchemistry.com 77051914&offset; prev Register CHM 2046 Sp 17 Help Close Applic files and close CH 18 HW Exercise 18.90 Resources previous l 6 of 7 l next Exercise 18.90 E Draw an electrolytic ce n which Mn 2-+ is reduced to Mn and sn is oxidized to Sn 2+ ume standard conditions Part A Label the anode and cathode, indicate the direction of electron flow, Drag the appropriate labels to their respective targets. Anode Cathode ADI SUI Mn Sn Mn2 reset help

Explanation / Answer

The SRP of Sn = -0.14 and SRP of of Mn = -1.18 V

As the reaction is given that Mn+2 is reduced nd Sn is oxididsed the cell reaction is

Mn+2 + Sn -----> Sn+2 + Mn

and Eocell =-1.18 -(-0.14)

= -1.04V

Part B the reaction at anode is oxidation

Sn --------> Sn+2 + 2e-

the reaction at cathode is

Mn+2 +2e- ----------> Mn

Part C

As the Eo of cell = -1.04V , the minimum voltage required to force the reaction to happen is 1.14V

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