a) OH- (aq) is a Lewis base because it can give electrions to Other. b) Fe Br3 (s) is a lewis acid since it will accept electrons from other species. c) Zn2+ (aq) is a Lewis acid and NH3 is a Lewis base d) SO2 (g) is a Lewis acid because S has not containing an octate configuration. Solution a) OH- (aq) is a Lewis base because it can give electrions to Other. b) Fe Br3 (s) is a lewis acid since it will accept electrons from other species. c) Zn2+ (aq) is a Lewis acid and NH3 is a Lewis base d) SO2 (g) is a Lewis acid because S has not containing an octate configuration..