[Shadow]

Is ammonium acetate solution a buffer? I think it is even if there are species which aren't conjugated.

[mjc123]

What has conjugation got to do with it?

[Borek]

I think he refers to the lack of an acid and a conjugate base pair.

No, it is not a buffer, even it has some properties of one. Can you list what are typical buffer properties, and predict, which of them ammonium acetate solution has?

[Shadow]

Concentration ratio of the acid and base shouldn't be bigger than 10:1, the acid and base should be weak. I can't think of more.

[Borek]

How does the buffer behave?

[Shadow]

The acid reacts with OH- from added base, and the base reacts with H+ from the added acid.

[Borek]

No, I mean - how does the pH change when adding base/acid, how does the pH change on dilution? These are the reasons we use buffers, so its the most important and the most basic characteristics, isn't it?

[Shadow]

It changes a little.

[Shadow]

Can I get the answer to my question now?

[billnotgatez]

I am curious
have you done any titration curves we could see

[Shadow]

No, but I am curious how it would look like.

[Babcock_Hall]

http://www.tutorvista.com/content/chemistry/chemistry-iii/ionic-equilibrium/titrations-acid-base.php

What does the bottom titration curve suggest about its ability to resist changes in pH?

[Borek]

Can I get the answer to my question now?

Can you start thinking on your own please? As you have stated buffer pH changes only a little bit in response to acid/base added. What happens to the pH of the ammonium acetate solution?

[Shadow]

It changes a little. So it should be  buffer!

[Borek]

It changes a little.

How much is "a little"? Show numbers. Say, you have 100 mL of 0.1 M acetate buffer at pH 4.75 and you add 1 mL of 1 M HCl solution. Then, you have 100 mL of 0.1 M ammonium acetate at pH 7.00 and you add 1 mL of 1 M HCl solution. By how much does pH change in each case?