71. Solving a chemistry problem
5. A portion of acetic acid weighing 1.023 g was diluted to 200 cm3. For titration of 20.00 cm3 of the resulting solution, 15.50 cm3 of sodium hydroxide solution with a titer of 0.004088 g/cm3 was used. Calculate the mass fraction of CH3COOH in the analyzed acid.
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