Yahoo Answers is shutting down on 4 May 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Crimson
Crimson asked in Science & MathematicsChemistry · 6 years ago

Which of the following acid-conjugate base pairs can serve as a buffer system?

a) HNO3 and NaNO3

B)HCI and NaCl

c) HF and NaF

Update:

can you please explain. Thank you

2 Answers

Relevance
  • IndyAssassin92
    6 years ago
    Favourite answer

    A buffer system must be comprised of a weak conjugate acid-base pair. This means that you can have a weak acid and its conjugate base or a weak base and its conjugate acid. A and B are both strong acids, which means they dissociate 100%. HF is a weak acid meaning only partial dissociation. From the definition I just gave, this means that C would be the correct choice.

  • skipper
    Lv 7
    6 years ago

    HF and NaF

    Only HF is a weak acid; HNO3 and HCl are 100% dissociated

Still have questions? Get answers by asking now.