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What is the pH of 0.41 M acetic acid to 1.00 L of which 2.39 g...

What is the pH of 0.41 M acetic acid to 1.00 L of which 2.39 g of sodium acetate, NaCH3CO2, has been added? ( Ka for acetic acid is 1.8 x 10-5 .)

pH =

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