1. Hydrolysis of magnesium chloride, aluminum chloride, and silicon tetrachloride, producing hydroxides and oxides. 2. Titration of chloride ions in meat products with silver nitrate, mole calculations, and ionic equations for sodium and potassium chlorides. 3. Iodination of benzene, enthalpy change calculation for iodine formation, and oxidation state changes of iodine and nitrogen. 4. Nitrogen oxide catalysis in acid rain formation, with reaction mechanisms. 5. Cu²⁺ electronic configuration, d-orbital splitting in transition metal complexes, and ammonia’s effect on copper solutions. 6. Curcumin structure, functional group analysis, and reactions with bromine and KMnO₄ for product identification.