Correct statements regarding alkyl halides $(\mathrm{R}-\mathrm{X})$ among the following are :
A. Alcohol being less polar solvent as compared to water, alcoholic KOH favours elimination reaction with $\mathrm{R}-\mathrm{X}$.
B. Order of reactivity towards $\mathrm{S}_{\mathrm{N}}{ }^1$ mechanism is $\mathrm{C}_6 \mathrm{H}_5-\mathrm{CH}_2-\mathrm{Cl}>\mathrm{C}_6 \mathrm{H}_5-\mathrm{CHCl}-\mathrm{C}_6 \mathrm{H}_5$.
C. Non substituted aryl halides exhibit properties similar to alkyl halides.
D. Vinyl chloride is an example of haloalkene and allyl chloride is an example of haloalkyne.
E. $\mathrm{R}-\mathrm{Cl}$ can be prepared by reacting $\mathrm{R}-\mathrm{OH}$ with $\mathrm{SOCl}_2$ but $\mathrm{Ar}-\mathrm{Cl}$ cannot be prepared by reacting $\mathrm{Ar}-\mathrm{OH}$ with $\mathrm{SOCl}_2$.
Choose the correct answer from the options given below :
Select the correct option:
A
A, B and C Only
B
B and D Only
C
A and E Only
D
D and E Only
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Water is more polar than alcohol, so it favours stability of reaction intermediate $\mathrm{Ar}-\mathrm{Cl}$ and $\mathrm{R}-\mathrm{Cl}$ shows different chemical properties
Rate of $\mathrm{S}_{\mathrm{N}}{ }^1 \propto$ stability of first formed carbocation
Vinyl chloride, allyl chloride, both are Haloalkene.
$$
\mathrm{R}-\mathrm{OH} \xrightarrow{\mathrm{SOCl}_2} \mathrm{R}-\mathrm{Cl}
$$
Phenol does not give $\mathrm{Ph}-\mathrm{Cl}$ with $\mathrm{SOCl}_2$ due to partial double bond character.
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