Advertisements
Advertisements
प्रश्न
Write a test to differentiate between pentan-2-one and pentan-3-one.
Advertisements
उत्तर
Pentan--one having a group forms a yellow ppt. of iodoform with an alkaline solution of iodine (i.e., iodoform test) while pentan-3-one does not.
\[\begin{array}{cc}
\ce{O}\phantom{.....................................}\\
||\phantom{.....................................}\\
\ce{CH3CH2\underset{Pentan-2-one}{CH2 - C - CH3} ->[I2/NaOH][(Iodoform test)] \underset{Yellow ppt.}{CHI3} + \underset{Sodium butanoate}{CH3CH2CH2COONa}}
\end{array}\]
APPEARS IN
संबंधित प्रश्न
How are the following compounds prepared?
benzaldehyde from benzene
Write the products formed when CH3CHO reacts with the following reagents : H2N – OH
Predict the product of the following reaction:
What is meant by the following term? Give an example of the reaction in the following case.
Imine
Acetaldehyde, Acetone, Di-tert-butyl ketone, Methyl tert-butyl ketone (reactivity towards HCN)
Complete the synthesis by giving missing starting material, reagent or product.
\[\ce{C6H5CHO ->[H2NCONHNH2]}\]
Explain the mechanism of alkaline hydrolysis of tert-butyl bromide with energy profile diagram.
How are the following compounds prepared?
acetophenone from benzene
What is the action of the following reagents on ethanoic acid?
1) `LiAlH_4"/"H_3O^+`
2) `PCl_3 , "heat"`
3) `P_2O_5, "heat"`
How will you convert benzoic acid to m-bromobenzoic acid?
Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzalchloride and then benzaldehyde from it.
Reaction of aqueous sodium hydroxide on chlorobenzene gives which of the following products?
The pH of blood does not appreciably change by a small addition of acid or base because
Which one of the following gives only one monochloro derivative?
What is the action of sodium hypoiodite on acetone?
Which will undergo faster nucleophilic addition reaction?
Acetaldehyde or Propanone
The product "P" in the above reaction is:
Draw structures of the following derivative.
The ethylene ketal of hexan-3-one
Draw the structure of the given derivative.
The ethylene ketal of hexan-3-one
Give an example of the reaction in the following case.
Imine
