15. Rank the following compounds in each group in order of increasing acidity: a) HF,NH3,H2O b) CH3OH,CH3CH3,CH3NH2 c) HF,HCl,HI d) CH3CH2OH,ClCH2CH2OH,CH3CH2CH3 e) CH3CH2CH2CH3,CH2CH=CHCH3 HCCCH2CH3 16. Rank the following in order of increasing basicity: a) Br,OH,CH3 b) CH3CH2,CH3O,CH3NH c) CH3COO,CH3CH2O,ClCH2COO 17. Identify all functional groups in the following molecules