Question

1. Use a table of Standard Reduction Potentials to predict if a reaction will occur between...

1. Use a table of Standard Reduction Potentials to predict if a reaction will occur between Sn metal and F2(g), when the two are brought in contact via standard half-cells in a voltaic cell.

If a reaction will occur, write a balanced net ionic equation for the reaction, assuming that the product ions are in aqueous solution. If no reaction will occur, leave all boxes blank.

2. Use a table of Standard Reduction Potentials to predict if a reaction will occur between Al metal and F2(g), when the two are brought in contact via standard half-cells in a voltaic cell.

If a reaction will occur, write a balanced net ionic equation for the reaction, assuming that the product ions are in aqueous solution. If no reaction will occur, leave all boxes blank.
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Answer #1

1. Sn - F2 cell

from standard data

E0Sn^2+/Sn = -1.662 v

E02F-/F2 = +2.87 V

E0cell = Ecathode - Eanode

        = 2.87 - (-0.13)

        = 3 V

over all reaction ; Sn(s) + F2(g) ----> Sn^2+(aq) + 2F^-(aq)

2. Al - F2 cell

from standard data

E0Al^3+/Al = -1.662 v

E02F-/F2 = +2.87 V

E0cell = Ecathode - Eanode

        = 2.87 - (-1.662)

        = 4.532 V

over all reaction ; 2Al(s) + 3F2(g) ----> 2Al^3+(aq) + 6F^-(aq)

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