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

Options

A. `2NH_(3)+H_(2)SO_(4)hArr2NH_(4)^(+)+SO_(4)^(2-)`
B. `NH_(3)+CH_(3)COOHhArrNH_(4)^(+)CH_(3)COO^(-)`
C. `H_(2)O+CH_(3)COOHhArrH_(3)O^(+)+CH_(3)COO^(-)`
D. `[Cu(H_(2)O)_(4)]^(2+)+4NH_(3)hArr[Cu(NH_(3))_(4)]^(2+)+4H_(2)O`

Answer

D

Explanation

It involves gain and loss of electron pair (Lewis concept).