The issue of the dissociation constant of hydrogen fluoride
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I’m seeking advice from experts. I was originally looking for the Henry’s law constant for hydrogen fluoride. I found a calculation in a foreign researcher’s paper, which stated that this constant depends on the dissociation constant Ka. So I searched on Baidu, but to my surprise, I found four different values for the dissociation constant, all given at 25 degrees Celsius and 1 atm pressure: 6.61x10^-4, 7.2x10^-4, 3.53x10^-4. There was also one value listed on a foreign website, which was 10^-3.4. What’s going on here? Which one should I watch? ? ?
One more question: what is the dissociation constant of HCL? The Ka value of strong acids should indeed be high, but saying it tends to infinity on Wikipedia is a bit exaggerated, isn’t it?
The Henry’s law constant of hydrogen fluoride depends on its concentration and temperature, as hydrogen fluoride tends to associate; therefore, its actual molecular formula is not simply HF. At low temperatures it is H4F4, above 80 degrees Celsius it is HF, and at intermediate temperatures it may be H2F2 or H3F3.