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Karnataka Board PUCPUC Science 2nd PUC Class 12

Assertion: The boiling points of alkyl halides decrease in the order: RI > RBr > RCl > RF Reason: The boiling points of alkyl chlorides, bromides and iodide are considerably higher than that of the

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Question

Assertion: The boiling points of alkyl halides decrease in the order:

RI > RBr > RCl > RF

Reason: The boiling points of alkyl chlorides, bromides and iodides are considerably higher than that of the hydrocarbon of comparable molecular mass.

Options

  • Assertion and reason both are correct and reason is correct explanation of assertion.

  • Assertion and reason both are wrong statements.

  • Assertion is correct but reason is wrong statement.

  • Assertion is wrong but reason is correct statement.

  • Assertion and reason both are correct statements but reason is not correct explanation of assertion.

MCQ
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Solution

Assertion and reason both are correct statements but reason is not correct explanation of assertion.

Explanation:

The given sequence of boiling points is correct:
RI > RBr > RCl > RF

Thionyl chloride is best halogen carrier to convert alcohol to alkyl halide because it gives byproducts in gaseous state. Thus, we get pure alkyl halide in this reaction.

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Chapter 10: Haloalkanes and Haloarenes - Exercises [Page 148]

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NCERT Exemplar Chemistry [English] Class 12
Chapter 10 Haloalkanes and Haloarenes
Exercises | Q V. 86. | Page 148

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