3. Label the following structures as either aromatic or non-aromatic. Also provide clear explanation for your determination of the structures as aromatic or non-aromatic. a) 4. (i) Rank the following acidic according to their strength i.e. strongest to weakest. (You can look up their structures and pKas) Acetic acid, isopropanol, HCN, phenol, benzoic acid, HCl,1-propyne. (ii) Also, rank the conjugate bases of the acids i.e. strongest to weakest