So what, then, will be the concentration of the acetate ion in your stock solution when you have finished?

(Disclaimer: I get to teach this stuff periodically in remedial chemistry as a punishment for deployment of excessive sarcasm during faculty meetings.)

On Jul 22, 2008, at 6:10 AM, Santosh wrote:

Hi,
Make a 1M Na-Acetate do not make up to the 1 Ltr volume. Leave some extra volume and now start adding Acetic acid till you get pH 4.5 (Glacial Acetic
Acid).
Now make up the volume to 1ltr or how much ever you are deciding to make the
50X stock solution.
Best,
Santosh

On Mon, Jul 21, 2008 at 11:20 PM, William G. Scott <
[EMAIL PROTECTED]> wrote:

This is a job for the trusty Henderson-Hasselbalch equation:

http://en.wikipedia.org/wiki/Henderson-Hasselbalch_equation



On Jul 21, 2008, at 8:12 PM, Meg wrote:

Dear All,

I want to prepare 25 mM sodium acetate buffer pH 4.5. can anyone give the exact composition of how to prepare it. we prepare it using sodium acetate and acetic acid combination. i am not able to arrive at the calculatation
correctly, so if anyone can  explain me with the above buffer how to
calculate. and what sodium acetate [Anhydrous / trihydrate] and acetic
acid
[glacial/ plain] to use.

thanks n regards

Meg goyal,
M.SC Biotechnology [Research]
Institute of science,
Fort
Mumbai, INDIA


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