125. Задачка по химии №012 571

The mass fraction of lactic acid in an aqueous solution, established by the method of acid-base titration in the presence of phenolphthalein, is (%): 5.12; 6.82; 6.12; 6.32; 6.22; 6.32; 6.02. What results should be excluded when calculating the content of lactic acid in a solution? Present the result.

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