Ionic EquilibriumHard
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
An acid-base indicator which is a weak acid has a pKIn value = 5.45. At what cocentration ratio of sodium acetate to ace...Which of the following solution will have a pH exactly equal to 8 ?...Solubility product constant (Ksp) of salts of types MX, MX2 and M3X at temperature ′T′ are 4.0 × 10-s, ...0.1 millimole of CdSO4 are present in 10 mL acid solution of 0.08 N HCl. Now H2S is passed to precipitate all the Cd2+ i...The pH of an aqueous solution of sodium chloride at 60o C is...