$a=$ Proton transfer

$b=$ Lewis acid$/$base

c $=$ Radical chain substitution

d $=$ Radical chain addition

$e=$ Electrophilic addition

$f=E1$ Elimination

$g=E2$ Elimination

h $=S_{N}1$ Nucleophilic substitution

$i=S_{N}2$ Nucleophilic substitution

Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a $-$ i for your answers.

$1.$

$2.$

$a=$ Proton transfer

$d=$ Radical chain addition

e $=$ Electrophilic addition

$f=$ El Elimination

$g=E2$ Elimination

$h=S_{N}1$ Nucleophilic substitution

$i=S_{N}2$ Nucleophilic substitution

Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a $-$ i for your answers.