Question

Which of these conjugate acid-base pairs will not function as a buffer?A) HNO3 and NO3^-B) HCO3^- and CO3^2-C) C2H5COOH and C2H5COO^-

Answer 1

Answer;

A) HNO3 and NO3^-

Explanation;

• HNO3 is a strong  acid and NO3 is its conjugate base, meaning it will not have any tendency to withdraw H+ from solution.
• Buffers are often prepared by mixing a weak acid or base with a salt of that weak acid or base.
• The buffers resist changes in pH since they contain acids to neutralize OH- and a base to neutralize H+. Acid and base can not consume each other in neutralization reaction.