2-Butanol CH2CH3 CH2cH3 HCIIII 111ICH3 H○ OH (nonsuperposable) (chiraL) 2-Propanol CH3 CH3 H3CIIIII H○ OH (superposable) (achiraLCH2 CH3 H H3 C HO CH2 CH3 H OH CH3 2-Butanol (nonsuperposable) (chiral) CH3 H H3 C HO CH3 H OH CH3 2-Propanol (superposable) (achiral)