A haloalkane is known to have an SN2 reaction rate 30 times faster than that of ethyl bromide. Identify the haloalkane.

Methyl bromide Isopropyl bromide tert-Butyl bromide neo-Pentyl bromide

Methyl bromide

The presence of bulky groups around the C atom has an inhibiting effect on the rate of SN2 reaction. Since methyl bromide has only three H atoms around the C, it will have a higher rate than ethyl bromide.