Which of the following aqueous solutions are good buffer systems? . 0.35 M nitro
ID: 304075 • Letter: W
Question
Which of the following aqueous solutions are good buffer systems?
.
0.35 M nitrous acid + 0.22 M potassium nitrite
0.24 M hydrobromic acid + 0.19 M sodium bromide
0.30 M ammonium bromide + 0.31 M ammonia
0.20 M hydrocyanic acid + 0.16 M potassium cyanide
0.14 M potassium hydroxide + 0.22 M potassium bromide
Which of the following aqueous solutions are good buffer systems?
.
0.27 M ammonia + 0.35 M sodium hydroxide
0.28 M nitric acid + 0.17 M potassium nitrate
0.16 M calcium hydroxide + 0.22 M calcium bromide
0.13 M hypochlorous acid + 0.13 M sodium hypochlorite
0.35 M potassium nitrate + 0.23 M barium nitrate
Explanation / Answer
Answer 1
0.30M ammonium bromide+0.31M ammonia
020M hydrocyanic acid+0.16 potassium cyanide
Answer 2
0.13M hypochlorous acid +0.13M sodium hypochlorite
A buffer solution must contain weak acid and its conjugate base or a weak base and its conjugate acid
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