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Explain symbolic representation of galvanic cell (electrochemical cell) by suitable example. |
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Answer» Solution :In SYMBOLIC REPRESENTATION of electrochemical cell, th reaction of anode (left side) and cathode (right side) half-cell are denoted by placing single vertical line between metal ion and ion/ metal respectively. * Anode and cathode are represented on right side and left respectively. * (-) and (+) signs are denoted on anode and cathode respectively. * Two parellel vertical lines are PLACED to denote the salt BRIDGE between these two half-cells. * If inert electrode is used, then to denote such inert electrode use sign like Pt or C which ever metal is used. Example-1: Symbolic representation of Daniell cell:  Example-2: Symbolic representation of galvanic cell constructed with inert electrode `Pt|H_(2)` and copper half-cell.  Reaction: `underset("Oxidation (left side)")(H_(2(g))to2H_((AQ))^(+)+2e^(-))|underset("Reduction (right side)")(Cu_((aq))^(2+)+2e^(-) to Cu_((S))` |
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