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प्रश्न
Convert the following:
acetaldehyde to isopropyl alcohol.
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उत्तर
\[\begin{array}{cc}
\phantom{.}\ce{O}\phantom{......................}\ce{OMgBr}\phantom{...................}\ce{OH}\\
||\phantom{.......................}|\phantom{.............}\phantom{.............}|\phantom{..}\\
\ce{\underset{Acetaldehyde}{CH3 - C - H}->[CH3MgBr]CH3 - CH - CH3}\ce{\underset{-Mg (OH)Br}{->[H3O-]}\underset{Isopropyl alcohol}{CH3 - CH - CH3}}\\
\end{array}\]
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संबंधित प्रश्न
Give reasons for the following: Butan-1-ol has a higher boiling point than diethyl ether.
Give reasons for the following : Phenol is more acidic than ethanol.
Explain why propanol has higher boiling point than that of the hydrocarbon, butane?
Give reason for the higher boiling point of ethanol in comparison to methoxymethane.
`CH_3-CH_2-Br"Alcoholic KOH"/""> B " HBR"/"">C"Na/Eather"/"">D`, the Compound D is
(A) ethane
(B) propane
(C) n-butane
(D) n-pentane
Give simple chemical tests to distinguish between the following pairs of compounds :
Ethanol and phenol
Identify the chiral molecule in the following pair :
Alcohols have high boiling points because of ____________.
Isopropyl alcohol is obtained by reacting which of the following alkenes with concentrated H2SO4 followed by boiling with H2O?
The correct order of boiling points for primary (1°), secondary (2°) and tertiary alcohol (3°) is:
Alcohols of low molecular weight are _____________.
Which of the following has lowest boiling point?
Which statement is not correct about alcohol?
Which one of the following alcohols is least soluble in water?
Which of the following is most acidic?
Arrange the following compounds in increasing order of boiling point. Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol
Assertion: Boiling points of alcohols and ethers are high.
Reason: They can form intermolecular hydrogen-bonding.
Arrange the following in the increasing order of their property indicated:
ethanol, ethanoic acid, benzoic acid (boiling point)
A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is ______. (to the nearest integer) (Atomic mass: C = 12; H = 1; O = 16)
Assertion (A): Alcohols react both as nucleophiles and electrophiles.
Reason (R): The bond between C–O is broken when alcohols react as nucleophiles.
Select the most appropriate answer from the options given below:
What is esterifications? How is an ester obtained from alcohol or phenol?
How are the following conversions carried out?
\[\ce{Methyl magnesium bromide ->2-Methylpropan-2-ol}\]
How is the following conversion carried out?
Methyl magnesium bromide → 2-Methylpropan-2-ol.
Identify ‘A’ in the following reaction.
\[\ce{A + Acetic anhydride ->[H^\oplus] Aspirin + Acetic acid}\]
