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In the button cells widely used in watCHMes and other devices the following reaction takes place : `Zn(s)+Ag_(2)O(s)+H_(2)O(l) rarr Zn^(2+)(aq)+2Ag(s)

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In the button cells widely used in watCHMes and other devices the following reaction takes place : Zn(s)+Ag2O(s)+H2O(l)→Zn2+(aq)+2Ag(s)+2OHc-(aq) Determine ΔrGc- and Ec- for the reaction. Select the correct answer from above options

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Correct Answer - a.1.104V , b.-2.13×105J a. E c- cell =E c- (Ag2O∣Ag)red -E c- (Zn2+∣Zn)red =0.344-(-0.76)=1.104V b.ΔrGc-=-nFEc-.(ncell=2) -2×96500×1.104J =-2.13×105J

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