Which of the following aqueous solutions are good buffer systems?
0.12 M calcium hydroxide + 0.22 M calcium chloride
0.21 M hydroiodic acid + 0.25 M sodium iodide
0.19 M nitrous acid + 0.14 M potassium nitrite
0.37 M hypochlorous acid + 0.27 M potassium hypochlorite
0.34 Mammonium nitrate + 0.33 Mammonia
Buffer systems are those that are formed by a weak acid / base and its conjugate pair:
i) 0.19 M Nitrous acid - 0.14 Potassium nitrite
ii) 0.37 M Hypochlorous acid - 0.27 Sodium hypochlorite
iii) 0.34 M Ammonium nitrate - 0.33 M ammonia.
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