3.2 The redox reaction below is used to construct an electrochemical cell.
[tex]Fe^{2+}(aq) + Ag^{+}(aq) \rightarrow Ag(s) + Fe^{3+}(aq)[/tex]
3.2.1 Define oxidation in terms of oxidation number.
3.2.2 Name a substance that should be used as electrode in the anode half-cell.
3.2.3 Write down the NAME or FORMULA of the oxidizing agent.
3.2.4 Write down the cell notation of the cell.
Answer (2)
Oxidation is defined as the loss of electrons and an increase in oxidation number. The oxidizing agent in the reaction is the silver ion, Ag^+. The cell notation for the electrochemical cell is Pt_{(s)} | Fe^{2+} {(aq)} | Fe^{3+} {(aq)} || Ag^{+} {(aq)} | Ag {(s)}.
;
Loss of electrons
Pt or C
silver ion / A g +
P t ( s ) ∣ F e ( a q ) 2 + ∣ F e ( a q ) 3 + ∣∣ A g ( a q ) + + A g ( s ) ;
