Advertisements
Advertisements
प्रश्न
What is the correct order of reactivity of alcohols in the following reaction?
\[\ce{R-OH + HCl ->[ZnCl2] R-Cl + H2O}\]
विकल्प
1° > 2° > 3°
1° < 2° > 3°
3° > 2° > 1°
3° > 1° > 2°
Advertisements
उत्तर
3° > 2° > 1°
Explanation:
The given reaction is nucleophilic substitution reaction in which –OH group is replaced by –Cl. Tertiary alcohols, when react with \[\ce{HCl}\] in presence of \[\ce{ZnCl2}\], form tertiary carbocation.
This intermediate 3° carbocation is more stable than 2° carbocation as well as 1° carbocation. The higher the stability of intermediate, the higher will be the reactivity of reactant molecule.
So, the order of reactivity of alcohols in the given reaction is 3° > 2° > 1°.
APPEARS IN
संबंधित प्रश्न
Write the equation involved in the acetylation of Salicylic acid.
Give the structure of the product you would expect when the following alcohol reacts with HCl–ZnCl2.
Butan-1-ol
Give two reactions that show the acidic nature of phenol.
Phenols do not react with one of the following:
Acidity of phenol is due to ____________.
In the following compounds:
The order of acidity is
In CH3CH2OH, the bond that undergoes heterolytical change most readily is ____________.
Which one of the following compounds has the most acid nature?
Arrange the following in decreasing order of acidic character:
Out of o-nitrophenol and o-cresol which is more acidic?
Assertion: o-Nitrophenol is less soluble in water than the m- and p-isomers.
Reason: m- and p- Nitrophenols exist as associated molecules.
Phenol is used in the manufacture of
For the pair phenol and cyclohexanol, answer the following:
Why is phenol more acidic than cyclohexanol?
Give the structure of the product you would expect when the following alcohol reacts with HCl–ZnCl2.
2-Methylbutan-2-ol
Give the structure of the product you would expect when the following alcohol reacts with SOCl2.
2-Methylbutan-2-ol
Compare acidity of phenol with that of ethanol.
