Answer to Question #244674 in General Chemistry for Ash

General Chemistry

Question #244674

Determine the pH and pOH of 0.25 L of a solution that is 0.0181 M boric acid and 0.0391 M sodium borate; pK_a for B(OH)₃ = 9.0 at 25°C.

Expert's answer

pH=pKa+log"\\frac{A-}{HA}"

pH=9.00+log"\\frac{0.04}{0.0215}" ]

pH = 9.27

pOH=14-pH

pOH=14-9.27=4.73

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