Advertisements
Advertisements
Question
What happens when chlorobenzene is subjected to hydrolysis?
Advertisements
Solution
Chlorobenzene does not undergo hydrolysis under normal conditions. However, it undergoes hydrolysis when heated in an aqueous sodium hydroxide solution at a temperature of 623 K and a pressure of 300 atm to form phenol.

APPEARS IN
RELATED QUESTIONS
Out of
, which is more reactive towards SN1 reaction and why?
In the following pair of halogen compounds, which compound undergoes a faster SN1 reaction?

Write the isomers of the compound having the formula C4H9Br.
What are ambident nucleophiles? Explain with an example.
Out of C6H5CH2Cl and C6H5CHClC6H5, which is more easily hydrolysed by aqueous KOH.
How the following conversion can be carried out?
Ethyl chloride to propanoic acid.
What is the action of the following on ethyl bromide
alcoholic solution of potassium hydroxide.
AgCN reacts with haloalkanes to form isocyanide. Haloalkanes react with KCN to form alkyl cyanides as the main product. Why?
Which compound in the following pair reacts faster in SN2 reaction with OH–?
- CH3Br or CH3
- CH3Cl, (CH3)3CCl
Optically active isomers but not mirror images are called ____________.
Which among MeX, RCH2X, R2CHX and R3CX is most reactive towards SN2 reaction?
Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of ____________.
Racemic compound has ____________.
SN1 reaction of alkyl halides lead to ___________.
The increasing order of nucleophilicity would be:
The increasing order of reactivity towards SN1 mechanism is:
(I) \[\begin{array}{cc}
\ce{CH3-CH-CH2-CH3}\\
|\phantom{........}\\
\ce{CH3}\phantom{.....}
\end{array}\]
(II) CH3CH2CH2Cl
(III) P–CH3O–C6H4–CH2Cl
Which of the following compounds will show retention in configuration on nucleophile substitution by OH− ion?
Retention of configuration is observed in ______.
The following questions are case-based questions. Read the passage carefully and answer the questions that follow:
|
Nucleophilic Substitution: Influences of solvent polarity: The reaction rate (SN2) of 2-bromopropane and NaOH in ethanol containing 40% water is twice slower than in absolute ethanol. Hence the level of solvent polarity has an influence on both SN1 and SN2 reactions but with different results. Generally speaking, a weak polar solvent is favourable for SN2 reaction, while a strong polar solvent is favourable for SN1. Generally speaking, the substitution reaction of tertiary haloalkane is based on SN1 mechanism in solvents with a strong polarity (for example ethanol containing water). |
Answer the following questions:
(a) Why racemisation occurs in SN1? (1)
(b) Why is ethanol less polar than water? (1)
(c) Which one of, the following in each pair is more reactive towards SN2 reaction? (2)
(i) CH3 – CH2 – I or CH3CH2 – Cl
(ii)

OR
(c) Arrange the following in the increasing order of their reactivity towards SN1 reactions: (2)
(i) 2-Bromo-2-methylbutane, 1-Bromo-pentane, 2-Bromo-pentane
(ii) 1-Bromo-3-methylbutane, 2-Bromo-2-methylbutane, 2-Bromo-3- methylbutane
