Question

What is the weak ionization constant (`K_a`) for `HCNO` equal to?

Answer 1

Well, you'll to have use google to search for the `"pK"_a` of fulminic acid (not to be confused with isocyanic acid, `"HNCO"`).


There is one for it dissolved in DMSO, `"pK"_a("DMSO") = -1.07`. Good luck finding one for it dissolved in water... `"HCNO"` is toxic and used in explosives.