JEE Mains · Chemistry · STD 12 - 6. Haloalkanes and Haloarenes
Correct statements regarding alkyl halides \((R - X)\) among the following are:
A. Alcohol being less polar solvent as compared to water, alcoholic KOH favours elimination reaction with \(R - X\).
B. Order of reactivity towards \(S_N^1\) mechanism is \(C_6 H_5 - CH_2 - Cl > C_6 H_5 - CHCl - C_6 H_5\).
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. \(R - Cl\) can be prepared by reacting \(R - OH\) with \(SOCl_2\) but \(Ar - Cl\) cannot be prepared by reacting \(Ar - OH\) with \(SOCl_2\).
Choose the correct answer from the options given below:
- A A, B and C Only
- B B and D Only
- C A and E Only
- D D and E Only
Answer & Solution
Correct Answer
(C) A and E Only
Step-by-step Solution
Detailed explanation
Statement A is correct. Alcoholic KOH provides alkoxide ions which are stronger bases than hydroxide ions. Furthermore, alcohol is a less polar solvent than water, which decreases the solvation of the base, making it more effective for elimination reactions over substitution.…
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