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121. Solving a chemistry problem
Uploaded:
03.08.2022
Content: 32.rar 21,4 kB
Content: 32.rar 21,4 kB
Product description
32. A weighing of technical sodium hydroxide weighing 0.3251 g was dissolved in a volumetric flask with a capacity of 100.0 ml. For titration of 25.00 ml of a solution with phenolphthalein, 18.40 ml of 0 1000 M HCl was used, and for titration of the same aliquot with methyl orange, 18.80 ml3 of acid was used. Calculate the mass fraction (%) of NaOH in the sample.
Answer: 88.58%
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