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並前往https://www.kbcc.cuny.edu/academicdepartments/physci/documents/practice_exams/CHM1200PracticeExam3.pdf

[H3O ][OH ] = KW = KaKb = 10 pH + pOH = 14.00 pH

E. 0.10 M CH3COONa. 3. Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5CO2H) and 0.15. M sodium benzoate (C6H5COONa).

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