1. Use a table of Standard Reduction Potentials to predict if a reaction will oc
ID: 1059312 • Letter: 1
Question
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.
Explanation / Answer
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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