What is a buffer and what do you need to make one?

  • Google+ icon
  • LinkedIn icon
  • 661 views

A buffer is a solution which resists changes in pH when alkaline or acidic solution is added to it.

Buffers are created based on the equilibrium of a proton donor/ acceptor and the conjugate base/ acid. For example, a weak acid and it's salt can act as a buffer. The weak acid hardly dissociates whilst the salt fully dissociates to give a large concentration of ions. The weak acid and its dissociated ion then exist in equilibrium to resist changes in pH made by adding or withdrawing protons. 

Felix B. A Level Chemistry tutor, IB Chemistry tutor, GCSE Chemistry ...

About the author

is an online A Level Chemistry tutor who tutored with MyTutor studying at Imperial College London University

Still stuck? Get one-to-one help from a personally interviewed subject specialist.

95% of our customers rate us

Browse tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok