1.

Depict the galvanic cell in which the rection Zn (s) +2 Ag^(+)Ag(aq)rarrZn^(2+)(aq)+2 Ag(s) takes plac further show : (i) which of the electrodie is negatively charged (ii) the carriers of current in the cell and (iii) individula rection at each electrode

Answer»

Solution :The given redox reaction is
`Zn(s)+2Ag^(+)(aq)rarrrZn^(2+)(aq)+AG(s)`
SINCE Zn gets oxidised to `An^(2+)` ionsand `Ag^(+)` gets reduced to Ag metal therefore oxidation occurs at the zinc electrode and reduction occurs at the silver electrode THUS galvanic cell corresponding to the above redox reactionmay be diepiceted as `Zn|Zn^(2+)(aq)||Ag^(+)(aq)|Ag`
(i) since oxidation occurs at the zinc electode therefore electrons accumulates on the zinc electode and hence ZIN electrode is negative charged
(ii) The ion carry current the electrons FLOW from to Ag electrode while the current flows from Ag to Zn electrode
(iii) The reaction occuring at the two electrodeare
`Zn(s)rarrZn^(2+)(aq)+21E^(-)`
`Ag^(+)(aq)+e^(-)rarrAg(s)`


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