Tollen reagent is used for the detection of aldehydes. When a solution of `AgNO_(3)` is added to glucose with `NH_(4)OH`, then gluconic acid is formed. `Ag^(o+)+e^(-) rarr Ag," "E^(c-)._(red)=0.8V` `C_(6)H_(12)O_(6)rarr underset(Gluconic aci d)(C_(6)H_(12)O_(7)+)2H^(o+)+2e^(-) , " "E^(c-)._(o x i d ) =-0.05V` `[Ag(NH_(3))_(2)]^(o+)+e^(-) rarr Ag(s)+2NH_(3), " "E^(c-)._(red)=0.337V` `[Use2.303xx(RT)/(F)=0.0592` and `(F)/(RT)=38.92at 298 K ]` `2Ag^(o+)+C_(6)H^(12)O_(6)+H_(2)O rarr 2Ag^(s)+C_(6)H_(12)O_(7)+2H^(o+)` Find `lnK` of this reaction.A. `12.7`B. `25.33`C. `28.30`D. `46.29`

Tollen reagent is used for the detection of aldehydes. When a solution

1.	Tollen reagent is used for the detection of aldehydes. When a solution of `AgNO_(3)` is added to glucose with `NH_(4)OH`, then gluconic acid is formed. `Ag^(o+)+e^(-) rarr Ag," "E^(c-)._(red)=0.8V` `C_(6)H_(12)O_(6)rarr underset(Gluconic aci d)(C_(6)H_(12)O_(7)+)2H^(o+)+2e^(-) , " "E^(c-)._(o x i d ) =-0.05V` `[Ag(NH_(3))_(2)]^(o+)+e^(-) rarr Ag(s)+2NH_(3), " "E^(c-)._(red)=0.337V` `[Use2.303xx(RT)/(F)=0.0592` and `(F)/(RT)=38.92at 298 K ]` `2Ag^(o+)+C_(6)H^(12)O_(6)+H_(2)O rarr 2Ag^(s)+C_(6)H_(12)O_(7)+2H^(o+)` Find `lnK` of this reaction.A. `12.7`B. `25.33`C. `28.30`D. `46.29`
Answer» Correct Answer - B For reaction `C_(6)H_(12)O_(6) + H_(2)O + 2Ag^(+) rarr C_(6)H_(12)O_(7) + 2H^(+) + 2Ag` `E^(@) = E_(OP_("glucose"))^(@) + E_(RP_(Ag^(+)//Ag))^(@)` `E^(@) = -0.05 + 0.80 = 0.75 V` Now ` nFE^(@) = 2.303 Rtlog_(10)K` `log_(10)K = (nFE^(@))/(2.303 RT) = (nE^(@))/(2.303 RT//F)` `= (2 xx 0.75)/(0.0592) = 25.33`

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