Please check my answer (standard cell potential)?

L

Lena

New member
Is the following chemical reaction correct? I'm not too sure.

a) Fe|Fe2+||Ag+|Ag:

Ag+(aq) + e- --> Ag(s),
Fe(s) --> Fe2+(aq) + 2e-

Therefore,
Ag+(aq) + Fe(s) + e- --> Ag(s) + Fe2+(aq) + 2e- (unbalanced)
2Ag+(aq) + Fe(s) + 2e- --> 2Ag(s) + Fe2+(aq) + 2e- (balanced)
2Ag+(aq) + Fe(s) --> 2Ag(s) + Fe2+(aq) (balanced)

Is my working out correctly done?

Also, when a cell is shown like this Sn|Sn2+||Br-|Br2|Pt, what does the 'Pt' actually mean?
 
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