2) Which of the following aqueous solutions are good buffersystems?

a) 0.25 M hydrobromicacid + 0.17 M sodium bromide

b) 0.15 M aceticacid + 0.16 M sodium acetate

c) 0.16 M sodiumhydroxide + 0.29 M sodium chloride

d) 0.37 M sodiumperchlorate + 0.24 M bariumperchlorate

e)0.28 M ammonia + 0.38 M potassiumhydroxide

3) A student measures the molar solubilityof calcium sulfite in a water solutiontobe 1.17?10^-4 M. Based on her data, the solubility product constant for thiscompound is _____

4) A student measuresthe PO₄^3- concentrationin a saturated aqueous solution of aluminumphosphate tobe 1.11?10^-10 M. Based on her data, the solubility product constantfor aluminum phosphate is ______

Transcribed Image Text:

Which of the following aqueous solutions are good buffer systems? 0.21 M hydrocyanic acid + 0.22 M sodium cyanide 0.20 M potassium hydroxide + 0.26 M potassium bromide 0.30 M hydrochloric acid + 0.24 M sodium chloride 0.36 M nitrous acid + 0.28 M sodium nitrite 0.26 M ammonium nitrate + 0.32 M ammonia Which of the following aqueous solutions are good buffer systems? 0.21 M hydrocyanic acid + 0.22 M sodium cyanide 0.20 M potassium hydroxide + 0.26 M potassium bromide 0.30 M hydrochloric acid + 0.24 M sodium chloride 0.36 M nitrous acid + 0.28 M sodium nitrite 0.26 M ammonium nitrate + 0.32 M ammonia

Answer rating: 100% (QA)

The detailed answer for the above question is provided below Answer 1 026 M ammonium nitrate 032 M ammonia 2 b 015 M acetic acid 016 M sodium acetate ... View the full answer