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Equilibrium
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12/10/2021 10:42 am
Topic starter
Which equilibrium can be described as an acid base reaction using the Lewis acid-base definition but not using the Bronsted-Lowry definition?
(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
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12/10/2021 10:44 am
Correct answer: (d) [Cu(H2O)4]2+ + 4NH3 ⇌ [Cu(NH3)4]2+ + 4H2O
Explanation:
[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.