Respuesta :
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.
HNO₃ and NO₃⁻ conjugate acid-base pairs will not function as a buffer solution.
What are buffer solutions?
Buffer solutions are those aqueous solution which are prepared by the mixing of weak acid and its conjugate base or by weak base and its conjugate acid, and it retains the change in pH of the solution.
Among the given pairs all will function as buffer mixture except the pair of HNO₃ and NO₃⁻. In this pair nitric acid (HNO₃) is a strong acid and NO₃⁻ is its conjugate base but this conjugate base have not considerable effect of withdrawing on the H⁺ ion of the solution.
Hence, option (A) is correct.
To know more about buffer solutions, visit the below link:
https://brainly.com/question/22390063
