Advertisements
Advertisements
Question
Answer in brief.
Observe the following equation of reaction of Tollens' reagent with aldehyde. How do we know that a redox reaction has taken place? Explain.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Advertisements
Solution
When an aldehyde is boiled with Tollens' reagent, it gets oxidized to carboxylate ion and Ag+ ion is reduced to silver (Ag). The oxidation number of carbon in aldehyde increases while the oxidation number of Ag decreases. Hence, this is a redox reaction.
APPEARS IN
RELATED QUESTIONS
Write the name of the product when ketones react with 1,2-diol in presence of dry HCl.
Explain haloform reaction with suitable example.
Identify the INCORRECT reaction.
Compounds of general formula, are called ____________.
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR''}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{R'}\phantom{...}\ce{OR''}\phantom{} \end{array}\]
Fehling solution is ____________.
The compound which does NOT undergo haloform reaction is ____________.
The number of α-H atoms in butanal is ____________.
The first oxidation product of secondary alcohols is ____________.
Which of the following is Clemmensen reduction?
Which among the following compounds does NOT undergo aldol condensation?
The formation of cyanohydrin from acetone is an example of ____________.
Reaction of acetone with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:
\[\ce{CH2 = CH2 ->[i) O3][ii) Zn/H2O] X ->[NH3] Y}\] ‘Y’ is:
In which case, chiral carbon is not generated by reaction with HCN.
Phenyl methanal is reacted with concentrated NaOH to give two products X and Y. X reacts with metallic sodium to liberate hydrogen X and Y are ____________.
In which of the following reactions new carbon-carbon bond is not formed?
Identify A, B, C and D.
\[\ce{ethanoic acid ->[SOCl2] A ->[Pd/BaSO4] B ->[NaOH] C ->[][\Delta] D}\]
How will you convert benzaldehyde into the following compound?
Benzoic acid
What is the action of HCN on propanone?
What is the action of HCN on 2, 4-dichlorobenzaldehyde?
How will you prepare acetamide from methyl cyanide?
The reagent used in Wolf - Kishner reduction is ______.
Which of the following reaction does not involve either oxidation or reduction?
Which of the following is most reactive towards the addition reaction of hydrogen cyanide to form the corresponding cyanohydrin?
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Identify B in the following reaction:
\[\begin{array}{cc}
\ce{O}\phantom{........}\\
||\phantom{........}\\
\ce{\underset{(Acetone)}{CH3 - C - CH3}->[CrO3] B}
\end{array}\]
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
How will you prepare Acetic anhydride from acetic acid.
How will you prepare acetic anhydride from acetic acid?
