Question
Explain Wolff$-$Kishner reduction.
✓
Answer
Hydrazine $(NH_2-NH_2)$ reduces carbonyl group
of aldehydes or ketones to metylene group 
When aldehyde or ketone is heated with hydrazine in the presence of base such as potassium hydroxide and ethylene glycol, an alkane is obtained due to reduction of carbonyl compound.
of aldehydes or ketones to metylene group When aldehyde or ketone is heated with hydrazine in the presence of base such as potassium hydroxide and ethylene glycol, an alkane is obtained due to reduction of carbonyl compound.Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Calculate the standard enthalpy of combustion of $CH _2 COOH _{(1)}$ from the following data : $\begin{aligned}\Delta_{ f } H ^0\left( CO _2\right)=-393.3 kJ mol ^{-1} \\\end{aligned}$
$\begin{aligned}
& \Delta_{ f } H ^0\left( H _2 O \right)=-285.8 kJ mol ^{-1} \\
& \Delta_{ f } H ^0\left( CH _3 COOH \right)=-483.2 kJ mol ^{-1}
\end{aligned}$
→$\begin{aligned}
& \Delta_{ f } H ^0\left( H _2 O \right)=-285.8 kJ mol ^{-1} \\
& \Delta_{ f } H ^0\left( CH _3 COOH \right)=-483.2 kJ mol ^{-1}
\end{aligned}$
Explain any three principles of green chemistry.
Using Raoult's law, how will you show that $\Delta P= P _1^0 x_2$ ? Where $x_2$ is the mole fraction of solute in the solution and $P _1^0$ vapour pressure of pure solvent.
→What happens when chlorine reacts with? $S_8$
→Write oxidation state and coordination number of $\left[ Co \left( NH _3\right)_4 Cl _2\right]^{+}$ion. Calculate EAN of iron in $\left[ Fe ( CN )_6\right]^{4-}$. Write the IUPAC name of $\left[ Zn \left( NH _3\right)_4\right]^{2+}$.
→Define pH and pOH. Derive relationship between pH and pOH.
What is the action of $Cl _2$ on
(a) Cold and dil. $NaOH$
(b) Hot and cone. $NaOH$
(c) $P _4$ molecule
(d) Iron (II)
→(a) Cold and dil. $NaOH$
(b) Hot and cone. $NaOH$
(c) $P _4$ molecule
(d) Iron (II)
Give the structures and IUPAC names of all metameric ethers represented by formula $C _5 H _{12} O$.
→Distinguish between order and molecularity of a reaction.
Write gases liberated at cathode and anode during electrolysis of aqueous NaCl solution.
Write two uses of neon.
Write gases liberated at cathode and anode during electrolysis of aqueous NaCl solution.
Write two uses of neon.
For a reaction, $A + B \rightarrow C$, if the concentration of $A$ doubles, the rate of the reaction doubles. While if the concentration of $B$ doubles the rate of the reaction increases by four fold. Write rate law. .
→