An aqueous buffer solution contains HC2H3O2(aq) and NaC2H3O2(aq). Which of the following statements — Acids and Bases Chemistry Question
Question
An aqueous buffer solution contains HC2H3O2(aq) and NaC2H3O2(aq). Which of the following statements best describes what occurs when a small amount of HCl(aq) or NaOH(aq) is added to the buffer?
A.
If HCl(aq) is added, the pH will increase only slightly because the H+ ions will react with Cl- ions.
B.✓ Correct
If HCl(aq) is added, the pH will decrease only slightly because the H+ ions will react with C2H3O2- ions.
C.
If NaOH(aq) is added, the pH will increase only slightly because the OH- ions will react with C2H3O2- ions.
D.
If NaOH(aq) is added, the pH will decrease only slightly because the OH- ions will react with HC2H3O2 molecules.
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