please draw the mech for all $4$ questions.

I. Write the chemical mechanism for the following using curved arrow formalism.

a$.$

$1.AlC{l}_3$;$2$dil.$HCl$

b$.$

${?}_{2.\text{d}\text{i}\text{l}\text{.}\text{K}\text{O}\text{H}}^{1.\text{c}\text{a}\text{t}\text{.}{H}_{2}S{O}_4\text{;}}$

$6$

$$cat.$AlC{l}_3,HCl$

d$.$