Which of these neutralization reactions has a pH

Question

Which of these neutralization reactions has a pH < 7 when equal molar amounts of acid and base are mixed? A)CH₃CO₂H(aq)+ NaOH(aq)⇌ H₂O(l)+ NaCH₃CO₂(aq) B)HCl(aq)+ C₅H₅N(aq)⇌ C₅H₅NHCl(aq) C)HCl(aq)+ NaOH(aq)⇌ H₂O(l)+ NaCl(aq) D)H₂SO₄(aq)+ 2 KOH(aq)⇌2 H₂O(l)+ K₂SO₄(aq)

Quizplus · Accepted Answer

The reaction between HCl (a strong acid) and C₅H₅N (a weak base) results in a solution with a pH < 7 because the conjugate acid (C₅H₅NH⁺) formed is stronger than the conjugate base, leading to an acidic solution.

Which of These Neutralization Reactions Has a PH < 7