In Which of the Following Cases Is Water Acting as a Base

question 22

Multiple Choice

In which of the following cases is water acting as a base under the Lewis definitions, but not under the Br∅nsted-Lowry definitions?

• A) H₂O(l) + HF(g) ⇌ H₃O⁺(aq) + F(aq)
• B) H₂O(l)+ CN-(aq) ⇌ OH^-(aq) + HCN(aq)
• C) H₂O(l) + Cu²⁺(aq) ⇌ Cu(H₂O)²⁺(aq)
• D) H₂O(l) + PO₄^3-(aq) ⇌ 2OH-(aq) + H₂PO₄^-(aq)
• E) H₂O(l) [electrolysis] ⇌ 2H₂(g) + O₂(g)

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