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For a buffer made from sodium acetate and acetic acid, the Ka of acetic acid is...

For a buffer made from sodium acetate and acetic acid, the Ka of acetic acid is 1.8E-5. What mass of sodium acetate (NaCH3CO2) must be added to 2.50 L of 0.60 M acetic acid to make a buffer solution with pH = 5.75?

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