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प्रश्न
Write the preparation reactions for acid amide from the following.
Carboxylic acid
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उत्तर
Carboxylic acids react with ammonia to form ammonium carboxylate salt which on further strong heating at high temperature decomposes to give acid amide.
\[\begin{array}{cc}
\phantom{}\ce{O}\phantom{......==.............}\ce{O}\phantom{........................}\ce{O}\phantom{...}\\
\phantom{}||\phantom{.......................}||\phantom{.........................}||\phantom{...}\\
\ce{\underset{\text{Carboxylic acid}}{R - C - OH} + NH3 ⇌ \underset{\text{Ammonium carboxylate}}{R - C - O- - NH^+_4} ->[\Delta][-H2O] \underset{\text{Acid amide}}{R - C - NH2}}
\end{array}\]
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संबंधित प्रश्न
Answer in brief.
Formic acid is stronger than acetic acid. Explain.
Arrange the following carboxylic acids with increasing order of their acidic strength and justify your answer.
1) 
2) 
3) 
Correct order of acid strength for
- acetic acid
- fluoroacetic acid
- 4-Nitrobenzoic acid
- 4-Methyl benzoic acid is ______.
Write the preparation reactions for acid amide from the following.
Acid chloride
Write reactions for the following conversions.
Propanone to Propane
Write reactions for the following conversions.
4-Nitrobenzoic acid to Nitrobenzene
Write chemical reactions to convert –COOH group of acetic acid into the following.
CH4
Write chemical reactions to convert –COOH group of acetic acid into the following.
C2H5OH
Write chemical reactions to convert –COOH group of acetic acid into the following.
CH3COCl
In the reaction,
\[\ce{CH3COOH ->[SOCl2] X ->[Sodium salt of carboxylic acid] Y}\].
The compound Y was found to be a mixed acid anhydride. Thus, the sodium salt of carboxylic acid used CANNOT be ____________.
Which of the following compounds reacts with ammonia to form urotropine?
Which is the gas evolved when carboxylic acids react with strongly electropositive metals (such as Na, K, Ca, Zn)?
Products in the following reaction are:
\[\ce{CH3COOH + PCl3 ->[\Delta]}\]
What amount of dinitrogen contains 3.6 × 1018 molecules?
The reducing agent preferred to convert carboxylic acids and esters to primary alcohols is ____________.
Which of the following aromatic acids has less acidic strength than benzoic acid?
Which of the following functional groups is reduced by diborane?
Which of the following compounds is obtained when ethanoic anhydride is treated with water?
Write structure of adipic acid.
Excess of ammonia with sodium hypochloride solution in the presence of glue or gelatine gives ______.
The number of bonding pairs and lone pairs of electrons present in the central atom of ammonia molecular are respectively.
Which of the following can reduce?
\[\ce{RCOOH -> RCH2OH}\]
How will you prepare Acetic anhydride from acetic acid?
Which of the following can not be oxidised to give carboxylic acid?
