An aqueous solution contains 0.28 M hydrofluoric acid. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.14 mol HBr 0.28 mol NaI 0.29 mol NaF 0.14 mol KOH 0.29 mol HBr

An aqueous solution contains 0.32 M potassium fluoride.One liter of this solution could be converted into a buffer by the addition of:(Assume that the volume remains constant as each substance is added. More than one answer maybe required.) a) 0.32 mol HNO3 b) 0.15 mol HNO3 c) 0.31 mol HF d) 0.31 mol KI e) 0.15 mol KOH

Determine the pH during the titration of 28.8 mL of 0.198 M perchloric acid by 0.199 M sodium hydroxide at the following points: (1) Before the addition of any sodium hydroxide (2) After the addition of 14.4 mL of sodium hydroxide (3) At the equivalence point (4) After adding 36.4 mL of sodium hydroxide

An aqueous solution contains 0.25 M nitrous acid. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.12 mol HI 00.12 mol KOH 00.26 mol HI 0.25 mol KCl 0.26 mol KNO2

A 1 liter solution contains 0.324 M acetic acid and 0.243 M potassium acetate.Addition of 0.122 moles of hydrobromic acid will:(Assume that the volume does not change upon the addition of hydrobromic acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity

An aqueous solution contains 0.26 M ammonium iodide. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.25 mol NH3 0.26 mol HNO3 0.12 mol HNO3 0.25 mol Nal 0.06 mol Ca(OH)2

) In a titration involving sodium hydroxide and hydrochloric acid, if significantly less acid were added to the reaction flask than what was called for, what affect would this have on the accuracy of the concentration of the reactants?   A) The sodium hydroxide would have a decreased concentration. B) The sodium hydroxide would have an increased concentration. C) The hydrochloric acid would have a decreased concentration. D) The hydrochloric acid would have an increased concentration. E) There would be no affect on the concentration of either reactant.

A saturated solution is made by adding excess copper (II) carbonate (CUCO3) to water. The addition of HBr would cause the solubility of the salt to [ Select ] the addition of CuBr would cause the solubility of the salt to [ Select ] and the addition of Na2SO3 would cause the solubility of the salt to [ Select ] Assume that the copper ions are not significantly acidic. [Select ] increase decrease