1° H = 6.2%/H . This results in a relative reactivity (RR) for 2° to 1° hydrogens of . RR( 2° /1° ) = 15.8/ 6.2 = 2.5 . This means that under these reaction conditions, a hydrogen is 2.5 times more 2° reactive than a 1° hydrogen. In the chlorination of 1- chlorobutane by sulfuryl chloride (assume that the attacking