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- Posts: 8
- Joined: Fri Sep 30, 2011 11:58 am
Just to be sure, wanted to double check the following with you;
Formic acid has a pKa of 3.77 and Ammonia 9.25.
(1)
Two buffer ranges seem to apply when an ammonium formate buffer is created, namely 2.7-4.7 and 8.25-10.25. The first range is to set ammonium formate with formic acid untill the correct pH is reached, the latter is set by adding ammonium hydroxide to the ammonium formate untill desired pH is reached. Correct?
(2)
Ammonium formate is actually a salt, not a buffer. In order to create a buffer with this salt, one needs to add eather formic acid, or ammonium hydroxide, thus would it not be better to call such a buffer either a formate buffer, or an ammonium buffer?
Thank you for thinking with me on this.