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Tollen's reagent is used for the detecti...

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^(+)+e^(-)rarrAg,,,E_(red)^(@) =0.8V),(C_(6)H_(12)O_(6)+H_(2)OrarrC_(6)H_(12)O_(7)("Gluconic acid")+2H^(+)+2e^(-),,,E_(red)^(@)=-0.05V),(Ag(NH_(3))_(2)^(+)+e^(-)rarrAg(s)+2NH_(3),,,E^(@) =- 0.337V):}`
[Use `2.303 xx (RT)/(F) = 0.0592` and `(F)/(RT) = 38.92` at `298K]`
`2Ag^(+) +C_(6)H_(12)O_(6)+H_(2)O rarr 2Ag(s) +C_(6)H_(12)O_(7)+2H^(+)` Find In K of this solution

A

`NH_(3)` combines with `Ag^(+)` to form a complex.

B

`Ag(NH_(3))_(2)^(+)` is a weaker oxidising reagent than `Ag^(+)`

C

In absence of `NH_(3)` silver salt of gluconic acid if formed

D

`NH_(3)` has affected the standard reduction potential of glucose/glconic acid electrode.

Text Solution

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The correct Answer is:
D
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