SOLVED

81) A ligand is a molecule or ion that acts as a A) Lewis acid B) Brønsted-Lowry acid C) Arrhenius base D) Lewis base E) conjugate base 82) Describe the solubility of Al(OH)3 with respect to pH. A) soluble at low pH, insoluble in pH-neutral solution, and soluble at high pH B) soluble at low pH, insoluble in pH-neutral solution, and insoluble at high pH C) insoluble at low pH,insoluble in pH-neutral solution, and soluble at high pH D) soluble at low pH, in pH-neutral solution, and at high pH E) pH has no effect on the solubility. 83) Gives what happens at low pH for aluminum hydroxide. A) Al(H2O)63+ dissolves B) Al(H2O)2(OH)4- precipitates C) Al(OH)6 dissolves D) Al precipitates E) Al dissolves 84) Gives what happens at neutral pH for aluminum hydroxide. A) Al(H2O)53+ precipitates B) Al(H2O)4(OH)2- dissolves C) Al(OH)3 precipitates D) Al precipitates E) Al dissolves 85) Gives what happens at high pH for aluminum hydroxide. A) Al(H2O)43+ dissolves B) Al(H2O)2(OH)4- dissolves C) Al(OH)6 dissolves D) Al precipitates E) Al dissolves 86) What is the molar solubility of AgCl in 0.30 M NH3? Ksp for AgCl is 1.8 × 10-10 and Kf for Ag(NH3)2+ is 1.7 × 107. A) 1.3 × 10-5 M B) 1.6 × 10-2 M C) 1.7 × 10-2 M D) 5.5 × 10-2 M