Iin radical chlorination of alkanes, non-equivalent hydrogens react with chlorine atoms at different rates. at 35oc, primary, secondary, and tertiary c-h bonds react at relative rates of 1 : 3.9 : 5.2 respectively. these are conditions of kinetic control where product ratios are determined by relative rates of formation. for example, if a is formed twice as fast as b, the a: b product ratio will be 2. consider chlorination of the alkane below at 35oc.

1.specify the most reactive c-h bond(s), a-c.
two non-equivalent c-h bonds of comparable reactivity should be separated by commas, i. e. a, c.

2. specify the site of chlorination in the major monochloro substitution product, a-c.
two products that form in comparable quantities should be separated by commas, i. e. a, c