### What is the formal concentration of ha in solution

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Question- A monoprotic weak acid (HA) with a Ka of 8.69 * 10^-4 is dissolved in water. The resulting solution has a pH of 2.30.

1) What is the formal concentration (F) of HA in solution?

2) Calculate the fraction of dissociation (?) for this acid?

Please show me how work it out above problem

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