Which of the following aqueous solutions are good buffer systems? 0.16 M acetic acid + 0.21 M potassium acetate 0.26 M perchloric acid + 0.19 M sodium perchlorate 0.19 M potassium cyanide + 0.25 M hydrocyanic acid 0.37 M hypochlorous acid + 0.24 M sodium hypochlorite 0.35 M ammonium bromide + 0.34 M ammoniaWhich of the following aqueous solutions are good buffer systems? 0.12 M acetic acid + 0.15 M potassium acetate 0.34 M ammonia +0.35 M ammonium bromide 0.10 M barium hydroxide + 0.24 M barium chloride 0.35...