Boric acid, BOH is used as a mild antiseptic. What is the pH of a 0.025 aqueous solution of boric acid? What is the degree of ionisation of boric acid in this solution? The hydrogen ion arises principally from the reaction: B(OH)3 (aq) + H2O(l) B(OH)4 (aq) _ + H + (aq) The equilibrium constant for this reaction is 5.9 . Question 3:  Calculate the pH of a solution obtained by mixing 500.0 mL of 0.10 M NH3 with 200.0 mL of 0.15 M HCl.

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Boric acid, BOH is used as a mild antiseptic. What is the pH of a 0.025 aqueous solution

of boric acid? What is the degree of ionisation of boric acid in this solution? The

hydrogen ion arises principally from the reaction:

B(OH)3

(aq) + H2O(l) B(OH)4

(aq)

_

+ H

+

(aq)

The equilibrium constant for this reaction is 5.9 .

Question 3: 

Calculate the pH of a solution obtained by mixing 500.0 mL of 0.10 M NH3 with 200.0 mL

of 0.15 M HCl.

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