Talk:Potassium bifluoride

Hi there,

I'm a QC expert. I am looking for a flowchart for mixing of HF and KOH to generate KHF2 (Potassium difluoride)in industry, but I don't find anything in internet. Even a system for a strong acid and a strong base is fine with me. Is there anybody to help me? It is so urgent!

Thanks in advance, Soufi Ramezani —Preceding unsigned comment added by Framezani2010 (talk • contribs) 17:49, 2 March 2010 (UTC)

Chemical formula
Which is the correct way to note the chemical formula? Is it KHF2 or KFHF or is either acceptable? The bifluoride ion is [F-H-F]- so I thought it should be written KFHF to represent the true structure. Deano8216 (talk) 15:04, 2 November 2010 (UTC)
 * formulas are funny things and their presentation does not necessary follow obvious logic. Chemist write this compound as KHF2.  We never write it as KFHF, but a good chemist would know what you mean and would be impressed that your formula indicates that you know something about the structure.  I have always thought that sulfuric should be written (HO)2SO2 instead of H2SO4, but (HO)2SO2 ain't going to happen, as they say.--Smokefoot (talk) 18:03, 2 November 2010 (UTC)

Enthalpy of Formation & Molar Entropy
There is currently a discrepancy between the enthalpy of formation in the literature.

The currently listed H_f (on this wiki page) is -417.26 kJ·K−1*mol−1

The currently listed Entropy (on this wiki page) is 45.56 J/(mol K)

The NIST web book found here:

http://webbook.nist.gov/cgi/cbook.cgi?ID=C7789299&Units=SI&Mask=2#Thermo-Condensed

Has the following values:

Quantity	Value	Units ΔHf°liquid	-916.57	kJ/mol Quantity	Value	Units S°liquid,1 bar	132.77	J/mol*K Quantity	Value	Units ΔHf°solid	-931.23	kJ/mol Quantity	Value	Units S°solid	       104.26	J/mol*K

Which of the aforementioned values should be used?

As a note, the current reference was published in 1949. The NIST reference was published 1998. SolipsisticAltruist (talk) 14:35, 12 February 2014 (UTC)