Advertisements
Advertisements
प्रश्न
How will you prepare acetic anhydride from acetic acid?
Write chemical reactions for the following conversion:
Acetic acid into acetic anhydride
Advertisements
उत्तर
Conversion of acetic acid into acetic anhydride:
\[\begin{array}{cc}
\phantom{...}\ce{CH3 - CO}\phantom{......................}\\
\phantom{.....}\backslash\phantom{...........}\\
\ce{\underset{(acetic acid)}{2CH3COOH} ->[P2O5][\Delta] \phantom{......}\phantom{............}O + H2O}
\phantom{................................}\\
\phantom{.....}/\phantom{...........}\\
\ce{\underset{(acetic anhydride)}{CH3 - CO}}\phantom{..................}
\end{array}\]
संबंधित प्रश्न
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.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Answer in brief.
Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.
Write the name of the product when ketones react with 1,2-diol in presence of dry HCl.
Write a reaction to distinguish acetaldehyde from acetone
Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?
The product formed after reaction between benzaldehyde and methyl magnesium iodide followed by acid hydrolysis is ____________.
Identify the INCORRECT reaction.
Which of following is not a property of red phosphorus?
Acetone on Clemmensen reduction gives ____________.
Following reaction is an example of ____________.
\[\ce{Benzaldehyde ->[Nitration] {m}-Nitrobenzaldehyde}\]
The first oxidation product of secondary alcohols is ____________.
Identify the product Y in the following series of reactions.
\[\ce{4-Nitrotoluene ->[(CH3CO)2O/CrO3][273 - 278 K] X ->[H3O^+][\Delta] Y}\]
Reaction of acetone with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:
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 ____________.
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their ____________.
Identify A, B, C and D.
\[\ce{ethanoic acid ->[SOCl2] A ->[Pd/BaSO4] B ->[NaOH] C ->[][\Delta] D}\]
What is the action of HCN on 2, 4-dichlorobenzaldehyde?
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
How is the following conversion effected propanal into butanone?
How is the following conversion effected phenyl methanal into benzoin?
How will you prepare ethyl acetate from methyl acetate?
How propanal is converted into propane.
Which of the following compound will show a positive silver mirror test?
The reagent used in Wolf - Kishner reduction is ______.

In the above reaction, product (B) is:
Which of the following is not correctly matched?
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
What is the action of hydrogen cyanide on the following?
Acetone
Write the structure of the products obtained from the following ketones by action of hydrazine in presence of strong base KOH.
Write reactions when phenol reacts with Dilute HNO3
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
How will you prepare acetic anhydride from acetic acid.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
How will you prepare acetic anhydride from acetic acid?


