1. Titration of 50.0 cm3 of white table wine until the color of phenolphthalein changes requires 21.4 cm3 of NaOH solution with С1/z=0.0377 mol/dm3. Express the acidity of the wine in grams of tartaric acid (H2C4H4O6, М=150 g/mol) per 100 cm3 of the solution, assuming that both hydrogen ions of the acid are titrated.

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