Ionic EquilibriumHard

Question

Whicn equilibrium can be described as an acid base reaction using the Lewis acid-base definition but not using the Bronsted-Lowry definition ?

Options

A.2NH3 + H2SO4 ⇋ 2NH4+ + SO42-
B.NH3 + CH3COOH ⇋ NH4+ + CH3COO-
C.H2O + CH3COOH ⇋ H3O+ + CH3COO-
D.[Cu(H2O)4]2+ + 4NH3 ⇋ [Cu(NH3)4]2+ + 4H2O

Solution

[Cu(H2O)4]2+ + 4NH3 ⇋ [Cu(NH3)4]2+ + 4H2O involves lose and gain of electrons. H2O is coordinated to Cu by donating electrons (LHS). It is then removed by withdrawing electrons.

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