Question

Which of the following aqueous solutions are good buffer systems? (check all that apply)
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0.22 M hydrochloric acid + 0.20 M sodium chloride

0.21 M acetic acid + 0.18 M sodium acetate

0.13 M sodium hydroxide + 0.26 M sodium chloride

0.38 M calcium iodide + 0.26 M potassium iodide

0.28 M ammonia + 0.39 M potassium hydroxide

Which of the following aqueous solutions are good buffer systems? (check all that apply)
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0.19 M acetic acid + 0.15 M hydrochloric acid.

0.34 M calcium chloride + 0.28 M potassium chloride.

0.30 M ammonia + 0.40 M ammonium bromide.

0.20 M sodium hydroxide + 0.27 M sodium chloride.

0.26 M hydroiodic acid + 0.19 M potassium iodide.

Which of the following aqueous solutions are good buffer systems? (check all that apply)
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0.15 M hypochlorous acid + 0.11 M potassium hypochlorite

0.37 M nitrous acid + 0.28 M potassium nitrite

0.26 M hydroiodic acid + 0.21 M sodium iodide

0.32 M ammonium bromide + 0.38 M ammonia

0.16 M sodium cyanide + 0.28 M hydrocyanic acid

Answer 1

1) Acetic acid + sodium acetate

2) ammonia + ammonium bromide

3) hypochlorous acid + pottasium chlorite

Nitrous acid+potassium nitrite

Ammonium bromide+Ammonia

Sodium cyanide + hydrocyanic acid