Coordination CompoundHardBloom L3
Question
From the stability constant (hypothetical values), given below, predict which is the strongest ligand:
Options
A.Cu2+ + 4NH3 $\leftrightarrows$[Cu(NH3)4]2+ , K = 4.5 × 1011
B.Cu2+ + 4CN– $\leftrightarrows$[Cu(CN)4]2–, K = 2.0 × 1027
C.Cu2+ + 2en $\leftrightarrows$[Cu(en)2]2+ , K = 3.0 × 1015
D.Cu2+ + 4H2O $\leftrightarrows$[Cu(H2O)4]2+, K = 9.5 × 108
Solution
Sol. Formation constant (K)↑ ⇒ stability of complex ↑ ⇒ strength of ligand ↑
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