Which of the following aqueous solutions are good buffer systems? (Select all that apply.)    0.20 M hypochlorous acid + 0.19 M sodium hypochlorite  0.20 M hydrochloric acid + 0.21 M potassium chloride  0.26 M ammonium nitrate + 0.33 M ammonia  0.12 M potassium hydroxide + 0.21 M potassium bromide  0.39 M hydrofluoric acid + 0.28 M sodium fluoride

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Which of the following aqueous solutions are good buffer systems?

(Select all that apply.)

 

 0.20 M hypochlorous acid + 0.19 M sodium hypochlorite 
 0.20 M hydrochloric acid + 0.21 M potassium chloride 
 0.26 M ammonium nitrate + 0.33 M ammonia 
 0.12 M potassium hydroxide + 0.21 M potassium bromide 
 0.39 M hydrofluoric acid + 0.28 M sodium fluoride 

 

 
 
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