Question

Which combination would act as an acidic buffer? A. HCl and NaOH B. CH3COOH and NaCH3COO C. HNO2 and HF D. NH3 and NH4Cl E. HCl and KCl

Answer 1

B. CH3COOH and NaCH3COO⁻

Step-by-step explanation

By definition, a buffer is a solution of a weak acid and conjugate base or a weak base and conjugate acid used to resist pH change with added solute.

However, acidic buffers are solutions that have a pH below 7 and contain a weak acid and one of its salts.

Therefore, the combination that would act as an acidic buffer among the given options is:

B. CH3COOH and NaCH3COO