Question

Depict the galvanic cell in which the reaction Zn(s) + 2Ag⁺(aq) → Zn²⁺(aq) + 2Ag(s) takes place, further show:

1. which of the electrode is negatively charged,
2. the carriers of the current in the cell, and
3. individual reaction at each electrode.

Answer 1

The galvanic cell corresponding to the given redox reaction can be represented as:

\[\ce{Zn | Zn^{2+}_{(aq)} || Ag+_{(aq)} | Ag}\]

1. Zn electrode is negatively charged because at this electrode, Zn oxidizes to Zn²⁺and the leaving electrons accumulate on this electrode.
2. Ions are the carriers of current in the cell.
3. The reaction taking place at Zn electrode can be represented as:

\[\ce{Zn_{(s)} -> Zn^{2+}_{(aq)} + 2e-}\]

And the reaction taking place at Ag electrode can be represented as:

\[\ce{Ag+_{ (aq)} + e- -> Ag_{(s)}}\]