Ionic EquilibriumEasy
Question
Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in alkaline solutions but not in acidic solutions. What is the reason for it?
Options
A.In acidic solutions protons coordinate with ammonia molecules forming NH4+ ions and NH3 molecules are not available
B.In alkaline solutions insoluble Cu(OH)2 is precipitated which is soluble in excess of any alkali
C.Copper hydroxide is an amphoteric substance
D.In acidic solutions hydration protects copper ions.
More Ionic Equilibrium Questions
In an attempted determination of the solubility product constant of Tl2S, the solubility of this compound in pure CO2 fr...The solubility products of Mg(OH)2, Cd(OH)2, Al(OH)3 and Zn(OH)2 are 4 × 10–11, 8 × 10–6, 8.5 × 10–23 and 1.8 × 10–14, r...A student was given 0.01 mole of a weak organic acid and told to determine the Ka of the acid. He prepared 100 ml of an ...What is [H+] in mol/L of a solution that is 0.20 M in CH3COONa and 0.10 M in CH3COOH ? (Ka for CH3COOH = 1.8 × 10-5...Which of the following when added to 1.0 L of 0.5 M HCl would result in maximum increase in pH :-...