Question

28. Describe the pH of the following salts? NaF, NH,CI, KI, NH.F A) acidic, basic, neutral, cannot tell without further information B) neutral, acidic, neutral, cannot tell without further information C) neutral, acidic, neutral, neutral D) basic, acidic, neutral, cannot tell without further information E) basic, acidic, neutral, neutral 29. Which of the following salts is(are) considered basic when dissolved in water? I NaNO IL K PO III NH C A) l only B) II only C) land il D) İand Ill E) 11 and 111 Aqueous Equilibria Which one of the compounds below has the lowest solubility in water, expressed in moles per liter? 30. A) SrF2, Ksp 2.8 x 10 B) Sr(IO,)2. Ksp 3.3 x 10 c) MgF2, Ku 6.5x 10 D) PbC12, Ksp = 1.6 x 10-5 E) Pblz, Ksp- 7.9 x 10 31. The concentration of OH- in a saturated solution of Mg(OH)2 is 3.63 x 104 M. The Kp of Mg(OH)2 is D) 3.6x 10 E) 2.4x 10 A) 6.6x 10 The solubility of Caso, in pure water at OC is 1.14 gram(s) per liter. The value of the solubility product is 4.8 x 10" C 1.3x 10 32. A) 8.37x 101.14x10 C 915 x 10D) 7.01 x 10 Which of the following salts would give you the lowest concentration of phosphate ions in solution if you placed 1 mole of the salt in a liter of water? 33. A) Ba (PO4h Ksp 1.3x 10-9 B) Ca (PO4h Kap 1.0x 10-25 C) Pb(PO4h Ksp 3.0x 104 D) Sry(POh Ksp- 1.0x 103 34. A 300.0-ml. saturated solution of copper(II) peroidate, Cu(lOs)h, contains 0.30 grams of dissolved salt. Determine the Kup (molar mass 445.4 g/mol) A) 1.0x10" B) 2.0x10-3 C) 2.2 x 10-, D) 4,5x10" E) 1.2x10" 35. The expression for the solubility product of copper(II) hydroxide, Cu/OH) is A) [Cup.][2011 ]

Answer 1

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