Exams › JEE Advanced › Chemistry
Identify the INCORRECT statement(s) among the following:
- R-OH reacts with NaI in the presence of phosphoric acid to give R-I, but this reaction does not proceed in the absence of phosphoric acid.
- 2-Methylpropane on chlorination (Cl2, hv) gives predominantly 1-chloro-2-methylpropane, whereas bromination (Br2, hv) gives predominantly 2-bromo-2-methylpropane.
- Higher temperatures generally favor substitution reactions over elimination reactions.
- Triphenylchloromethane cannot be hydrolyzed.
Correct answer: Higher temperatures generally favor substitution reactions over elimination reactions.
Solution
Statement C is incorrect because higher temperatures actually favor elimination (E2) over substitution. Statement D is also incorrect because triphenylchloromethane (trityl chloride) hydrolyzes very easily due to the exceptional stability of the triphenylmethyl carbocation.
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