The free radical chlorination of isobutane at 25C yields 64% isobutyl chloride and 36% tert-butyl chloride. However free radical bromination of the same compound at 127C yields only trace amount of isobutyl bromide and 99% tert-butyl bromide, even though the ease of formation and free radical stability is the same fro chlorination and bromination. Could you explain the cause for these differences in the ratio of the product. Consider that the reactivity ratio of the roducts for chlorination and bromination are 5:3.8:1 and 1600:82:1 respectively.
I would apprecaite a quick response.
Thanks for your halp