1.

Write shorthand notation for the cell for each of thefollowing reactions :(a) Cu_((aq))^(2+) + 2Ag_((s)) + 2Br_((aq))^(-) to Cu_((s)) + 2AgBr_((s)) (b) Sn_((aq))^(2+) is oxidized by Br_(2(1))

Answer»

Solution :(a) `Cu_(aq)^(2+) + 2AG_((s)) + 2Br_(aq)^(-) to Cu_(s) + 2AgBr_((s))`
`2Ag_((s)) + 2Br_((aq))^(-) to 2AgBr_((s)) + 2e^(-)`(Oxidation HALF reaction at ANODE )
`Cu_((aq))^(2+) - 2e^(-) to Cu_((s))` (Reducation half reactionat cathode)
Hencethe CELL is ,
`Ag_((s)) |AgBr_((s)) |Br_((aq))^(-) (1M) || Cu_((aq))^(2+)(1M) |CU`
(b)`Sn_((aq))^(-) + Br_(2(l)) to Sn_((aq))^(4+) + 2Br_((aq))^(-)`
`Sn_((aq))^(2+) to Sn_((aq))^(4+) + 2Br_((aq))^(-)` (Oxidation halfreactionatanode)
`Br_(2(l)) + 2^(-) to 2Br^(-)`(Reductin halfreactionat cathode).
Hencethe cell is ,
`Pt| Sn_((aq))^(2+),Sn_((aq))^(4) || Br_((aq))^(-) | Br_((aq))^(-) | Pt `


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