Depict the galvanic cell in which the reaction is:

\( Zn_{\left ( s \right )} \;+ \;2 \;Ag_{\left ( aq \right )}^{+} \;\rightarrow \;Zn^{2+}_{\left ( aq \right )} \;+ \;2 \;Ag_{\left ( s \right )} \)

Further show:

(i) which of the electrode is negatively charged?

(ii) the carriers of the current in the cell.

(iii) individual reaction at each electrode.

Asked by Pragya Singh | 2 years ago |  234

1 Answer

Solution :-

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

\( Zn|Zn^{2+}_{\left ( aq \right )}+​||Ag^{+}_{\left ( aq \right )}|Ag \)

(i) Zn electrode is negatively charged because at this electrode, Zn oxidizes to \( Zn^{2+}\)and the leaving electrons accumulate on this electrode.

(ii) The carriers of current are ions in the cell.

(iii) Reaction at Zn electrode is shown as:

\( Zn_{\left ( s \right )} \;\rightarrow \;Zn^{2+}_{\left ( aq \right )} \;+ \;2 \;e^{-}\)

Reaction at Ag electrode is shown as:

\( Ag^{+}_{\left ( aq \right )} \;+ \;e^{-}\;\rightarrow \;Ag_{\left ( s \right )}\)

Answered by Pragya Singh | 2 years ago

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