The compound that will react most readily with gaseous bromine has the formula

38 2016 Phase II HydrocarbonsAllylic substitution Medium
The compound that will react most readily with gaseous bromine has the formula
A $C_4H_{10}$
B $C_2H_4$
C $C_3H_6$
D $C_2H_2$

Explanation

Propene has allylic hydrogens for radical substitution.

Detailed Solution

Gaseous bromine reacts with an alkene having allylic H to give an allylic substituted product by a free radical mechanism.
$CH_3-CH=CH_2 \xrightarrow{Br_2(gas)} BrCH_2-CH=CH_2$

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