The addition of HCl to cyclohexene is shown below in Scheme $1.$

$($i$)$ Identify which reactant is the nucleophile and which is the electrophile.

$($ii$)$ Draw the structure of the intermediate.

$($iii$)$ Draw the structure of the reaction product.

$($iv$)$ Sketch a reaction coordinate diagram for the reaction and use it to indicate which

step, the first or the second, is the slow $($rate determining$)$ step of the reaction.

$($v$)$ Using curly arrows, draw the mechanism of the reactionScheme $1$

$[10$ marks$]$