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In: Chemistry

Which of the following aqueous solutions are good buffer systems?

Which of the following aqueous solutions are good buffer systems? 

0.31 M ammonium bromide +0.37 M ammonia 

0.18 M potassium fluoride + 0.23 M hydrofluoric acid 

0.34 M hydrocyanic acid + 0.23 M sodium cyanide 

0.24 M hydrochloric acid + 0.21 M sodium chloride 

0.22 M acetic acid + 0.18 M sodium acetate 


Which of the following aqueous solutions are good buffer systems? 

0.33 M calcium nitrate + 0.25 M sodium nitrate 

0.14 M calcium hydroxide + 0.22 M calcium chloride 

0.30 M ammonia + 0.38 M potassium hydroxide 

0.14 M hydrocyanic acid + 0.21 M potassium cyanide 

0.26 M nitric acid + 0.24 M sodium nitrate 

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