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30-04-2024
Chemistry

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Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C₆H₅CO₂H) and 0.15M sodium benzoate (CH₅COONa). [Ka = 6.5 x 10⁻³ for benzoic acid]
a. 4.83
b. 3.40
c. 4.19
d. 3.97
e. 4.41

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