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Need help with derivation of Solubility Product Constant of weak acid. S = {Ksp (H + Ka) / KA}^1/2

HbWhi5F
in Homework Help

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Firstly there are what seems to be typos, H has negative charge the latter inverse equation are X instead of H in denominator.

Question

  1. solubility is for individual ions for salt they is solubility product Ksp ?

  2. What is S [f S] and why that equalts to Ksp and S^2 {KS/(Ks + H)} and how is that equal to S = {Ksp (H + Ka) / KA}^1/2

I took me 2+ hours to try and understand this but still don't get it.

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