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Question: Answered & Verified by Expert
Arrange the following hydrogen halides in order of their decreasing reactivity with propene.
ChemistryHydrocarbons
Options:
  • A
    $\mathrm{HCl}>\mathrm{HBr}>\mathrm{HI}$
  • B
    $\mathrm{HBr}>\mathrm{HI}>\mathrm{HCl}$
  • C
    $\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}$
  • D
    $\mathrm{HCl}>\mathrm{HI}>\mathrm{HBr}$
Solution:
1673 Upvotes Verified Answer
The correct answer is:
$\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}$
Lesser the bond energy of hydrogen halide more will be its reactivity. Hence, the order of reactivity of given compounds with propene will be $\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}$.

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