The following reaction between ethyl alcohol and ethyl bromide forms diethyl ether via a substitution reaction (followed by deprotonation). (a) Determine the electrophilic site of the substitution reaction. Highlight it in the reaction below. O-H + OH + + Br H-Br Br Click on an atom to select it; click again to deselect it. A selected atom will be highlighted green. + H-Br (b) Determine the nucleophilic site of the substitution reaction. Highlight it in the reaction below. O-H + + H-Br