The compound C6H5CH2CH2OH is known as phenethyl alcohol. It contains the following functional groups:1. Aromatic ring Phenyl group : C6H52. Aliphatic chain: CH2CH23. Alcohol group: OHWhen phenethyl alcohol reacts with hydrochloric acid HCl , the alcohol group -OH will be protonated, and a substitution reaction will occur, replacing the -OH group with a -Cl group. The product of this reaction will be phenethyl chloride C6H5CH2CH2Cl and water H2O .Reaction: C6H5CH2CH2OH + HCl C6H5CH2CH2Cl + H2O