6.56. To determine salicylic acid, a sample of the pharmaceutical preparation weighing 0.2102 g was transferred to a Na2CO3 solution, iodine was added, and tetraiodophenylenequinone (C6H2I2O)2 was precipitated. The mass of the resulting sediment was 0.5175 g. Calculate the mass fraction (%) of salicylic acid C6H4(OH)COOH in the preparation.

Read the product description. After payment, the system will redirect you to a page with a ready-made solution to problem 6.56 from the collection: Vasilyev V.P. Analytical chemistry. Collection of questions, exercises and tasks: a manual for universities / V.P. Vasiliev, L.A. Kochergina, T.D. Orlova; edited by V.P. Vasilyeva. – 4th ed., stereotype. – M.: Bustard, 2006. – 318, [2] p.: ill. The solution is a document formatted in MS Word.
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