Arrange the following hydrogen halides i...

Arrange the following hydrogen halides in order of their decreasing reactivity with propene.

A

`HCl gt HBr gt HI`

B

`HBr gt HI gt HCl`

C

`HI gt HBr gt HCl`

D

`HCl gt HI gt HBr`

Verified by Experts

The correct Answer is:

C

Bond energy of HI is 296.8 kJ/mol, HBr is 36.7KJ/mol and HCl is 430.5kJ/mol. Hence, `HI gt HBr gt HCl` is the order of reactivity with propene.

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