Assignment:
This problem indicates that 1 gram of hydrated boric acid (H3BO3) is added to 1 liter of water at pH 7.0 and at standard temperature.
The solubility is stated in the problem as 5.7 grams per 100 ml of solution. A pKa is also given as 9.24.
1) What does the pKa value mean?
2) How would you determine the amount of boric acid that will dissolve at pH 7 given the conditions above?
3) And then how would you determine how much boric acid dissolved would dissolve if the pH were lowered to 6.0?
Provide complete and step by step solution for the question and show calculations and use formulas.