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.
Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.
Explain haloform reaction with suitable example.
Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?
Ethyl methyl ketone can be reduced to n-butane by which of the following reactions?
Identify B in the following reaction,
\[\ce{Acetaldoxime ->[Na][alcohol] A ->[NaNO2][HCl] B + H2O + N2\uparrow}\]
Acetone on Clemmensen reduction gives ____________.
The compound which does NOT undergo haloform reaction is ____________.
The number of α-H atoms in butanal is ____________.
Which of the following is Clemmensen reduction?
Identify the product Y in the following series of reactions.
\[\ce{4-Nitrotoluene ->[(CH3CO)2O/CrO3][273 - 278 K] X ->[H3O^+][\Delta] Y}\]
Assertion: 2, 2-dimethyl propanoic acid does not give HVZ reaction.
Reason: 2-2, dimethyl propanoic acid does not have α-hydrogen atom.
\[\ce{Ethanoic acid ->[P/Br2] 2-bromoethanoic acid}\]. This reaction is called ____________.
‘B’ 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 and C.
Identify A, B, C and D.
\[\ce{ethanoic acid ->[SOCl2] A ->[Pd/BaSO4] B ->[NaOH] C ->[][\Delta] D}\]
How is the following conversion effected phenyl methanal into benzoic acid?
Complete the following reaction.
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - C - CH3 ->[HO - CH2 - CH2 - CH2 - OH][dry HCl] ?}\\
||\phantom{.........}\\
\ce{O}\phantom{.........}
\end{array}\]
Identify A, B and C.
How will you prepare ethyl acetate from methyl acetate?
How will you prepare lactic acid from ethanol?
How will you prepare malachite green from benzaldehyde?
How acetone is converted into propane.
Which of the following compound will show a positive silver mirror test?
Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of ______.
Which of the following compound will give positive iodoform test?
A substance C4H10O yields on oxidation a compound, C4H8O which gives an oxime and a positive iodoform test. The original substance on treatment with a conc. H2SO4 gives C4H8. The structure of the compound is ______.
Which of the following compounds does not undergo a haloform reaction?
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
Identify B in the following reaction:
\[\begin{array}{cc}
\ce{O}\phantom{........}\\
||\phantom{........}\\
\ce{\underset{(Acetone)}{CH3 - C - CH3}->[CrO3] B}
\end{array}\]
Write reactions when phenol reacts with Dilute HNO3
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.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
