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Tollen's reagent is used for the detection of aldehyde. When a solution of AgNO_(3) is added to glucose with NH_(4)OH, then gluconic acid is formed. Ag^(+)toe^(-)toAg,E_(red)^(@)=0.8V C_(6)H_(12)O_(6)+H_(2)OtoC_(6)H_(12)O_(7) (Gluconic acid) +2H^(+)+2e^(-),E_(oxd)^(@)=-0.05V Ag(NH_(3))_(2)^(+)+e^(-)toAg(s)+2NH_(3),E^(@)=-0.337V [Use 2.303xx(RT)/(F)=0.0592 and (F)/(RT)=38.92 at 298K] Now answer the following three questions: Q. We have take a saturated solution of AgBr. K_(sp) of AgBr is 12xx10^(-14) if 10^(-7) mole of AgNO_(3) are added to 1 litre of this solution, find conductivity (specific conductance) of this solution in terms of 10^(-7)Sm^(-1) Given lamda_((Ag^(+)))^(@)=6xx10^(-3)Sm^(2)mol^(-1),lamda_((Br^(-)))^(@)=8xx10^(-3)Sm^(2)mol^(-1),lamda_((NO_(3)^(-)))^(@)=7xx10^(-3)Sm^(2)mol^(-1) |
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Answer» `(S+10^(-7))xxS=K_(SP)=12xx10^(-14)` `S=3XX10^(-7)M` `[Ag^(+)]=4xx10^(-7)M,[Br^(-)]=3xx10^(-7)M,[NO_(3)^(-)]=10^(-7)M` `K_("TOTAL")=lamda_((Ag^(+)))^(@)lamda_((Ag^(+)))^(@)+lamda_(Br^(-))^(@)-lamda_(Br^(-))^(@)+lamda_((NO_(3))^(-))^(@)lamda_((NO_(3)^(-)))^(@)` `lamd_(KCl)^(@)=lamda_(k)^(@)+lamda_(CL^(-))^(@)` `K_(KCl)=4xx10^(-4)xx6xx10^(-3)+3xx10^(-4)xx8xx10^(-3)+1xx10^(-4)xx7xx10^(-3)` `K_(KCl)=24+24+7` `K_(KCl)=55Scm^(-1)` |
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