2. Describe the analytical properties of the following compounds: H2S, HCl, CaHPO4, Cr(OH)3, Bi2S3. Indicate the state of aggregation, electrolyte strength, color, solubility in water, acids, alkalis, etc., amphotericity, hydrolyzability, redox properties, solubility products (for poorly soluble compounds), electrolytic dissociation constants (for weak electrolytes).

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