KA of a strong acid

[Drrrrrr. Celty]

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ka = conc products/ conc reactants

if it's HCL in water ( L) then HCL = dissociated complete = conc 0.

So are we just eliminating the concentration of HCL from the denominator or are we considering it to be a very small number?

 

[Teleologist]

So are we just eliminating the concentration of HCL from the denominator or are we considering it to be a very small number?

The latter.