Simple chemical tests are often utilized for qualitative analyses of inorganic and organic compounds — Organic Chemistry Chemistry Question

Simple chemical tests are often utilized for qualitative analyses of inorganic and organic compounds. Identification of unknown compounds requires a wide range of chemical knowledge. In order to identify inorganic compounds, unknown compounds are classified on the basis of their behavior to reagents which bring about acid-base, and/or redox reactions, sometimes producing precipitations. For organic compounds, the chemical reactions of functional groups present in the molecule are used for identification purposes. For polymeric compounds, the additional effects characteristic of macromolecules should be taken into consideration in order to identify the compounds. Suppose that a polymer solution with a functional group A in each repeating unit is mixed with a solution of a chemically complementary polymer with a functional group B, and that there are attractive interactions between A and B. Due to the presence of a large number of the repeating units, the intermolecular attractive interactions inherent in polymers are stronger than those of the corresponding small molecules. Combining such polymers forms a polymer-polymer complex. The complex usually shows lower solubility than the individual polymers, and precipitation of the complex is often observed. In this experiment, you will have five unknown aqueous solutions (A – E), each containing one of the compounds below (all of which are used). Carry out the following experiments and answer the questions.

poly(methacrylic acid) ethylene glycol
poly(sodium 4-styrenesulfonate) aniline hydrochloride
succinic acid

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