In the presence of light at 25 °C,isobutane (1 mol)and bromine (1 mol)yield which monobromo product(s)?
A)2-Methyl-1-bromopropane (almost exclusively)
B)2-Methyl-2-bromopropane (almost exclusively)
C)A mixture of 50% (A)and 50% (B)
D)A mixture of 90% (A)and 10% (B)
E)Butyl bromide

Question

Quizplus · Accepted Answer

Isobutane reacts with bromine to form 2-methyl-2-bromopropane as the major product, almost exclusively, under the given conditions of light and 25°C. This is due to the stability of the secondary carbocation intermediate formed during the reaction, which favors the migration of the bromine atom to the carbon atom adjacent to the existing methyl group. The other options, such as A, C, D, and E, are not formed or produced in significant amounts under the given conditions.

In the Presence of Light at 25 °C,isobutane (1 Mol)and