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Hydrocarbons — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons1 Mark
MCQ
Bromination of an alkane as compared to chlorination proceeds _____________.
  • A
    At a slower rate
  • B
    At a faster rate
  • C
    With equal rate
  • D
    With equal rate (or) different rate depending upon the temperature.
✓

Answer

  1. At a slower rate

Explanation:

Bromination of an alkane occurs at a slower rate than chlorination of an alkane.

As we know that halogenation involves the formation of a carbon-halogen bond. Now, the ease of halogenation will certainly depend on the carbon-halogen bond strength.

Bond formation energy of C−Cl is higher than that of C−Br bond.

So, the ease of bromination is lower than the ease of chlorination.

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