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  4. Which of the following does not reduce Tollen's reagent?

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Q. Which of the following does not reduce Tollen's reagent?

NTA AbhyasNTA Abhyas 2022

Solution:

Option A, B and C reduce Tollen's reagent.
A. $ CH _3 CHO +2\left[ Ag \left( NH _3\right)_2\right]^{+}+3 OH ^{-} \rightarrow CH _3 COO ^{-}+2 Ag +2 H _2 O +4 NH _3 $
B. $C _6 H _4 NHOH +2\left[ Ag \left( NH _3\right)_2\right]^{+}+2 OH ^{-} \rightarrow C _6 H _5 NO +4 NH _3+2 Ag +2 H _2 O$
C. $HCOOH +2\left[ Ag \left( NH _3\right)_2\right]^{+}+2 OH ^{-} \rightarrow 2 Ag +4 NH _3+ CO _2+2 H _2 O$