第四节难溶电解质的溶解平衡（Dissolution equilibrium of fourth insoluble electrolytes）.docVIP

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第四节难溶电解质的溶解平衡（Dissolution equilibrium of fourth insoluble electrolytes）.doc

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第四节难溶电解质的溶解平衡（Dissolution equilibrium of fourth insoluble electrolytes）

第四节难溶电解质的溶解平衡（Dissolution equilibrium of fourth insoluble electrolytes） Dissolution equilibrium of fourth insoluble electrolytes Section A Study objective: 1.. Let the students master the dissolution balance and the dissolution balance of insoluble electrolyte 2., the principle of equilibrium movement is used to solve the problem of the dissolution and precipitation of the precipitate. Teaching process: A mixture of equal amounts of material, concentration, and equal volume of AgNO3 solution mixed with NaCl solution produces white precipitate, which is generally believed to proceed in the end. Ag + and Cl- response can really in the end? Read the book and answer the following questions. A, Ag + and Cl- response can really in the end? Thinking and communication: 1. in the test tube containing a small amount of solid calcium carbonate, the injection of a small amount of distilled water, fully static oscillation, the supernatant liquid, adding 1mol/L CaCl2, and white turbid, what does this mean? Is the solubility of 2. insoluble substances 0? 3. when the AgNO3 reacts with NaCl to produce insoluble AgCl, does the solution contain Ag and Cl-? Is there a dissolution balance in 4. insoluble electrolytes (such as AgCl)? How to express? 1, insoluble electrolytic dissolution equilibrium at a certain temperature, __________________________ is equal to ___________________________, solution ________________ unchanged state. (also known as precipitation, dissolution, balance) 2. features: such as: precipitation dissolution equilibrium, precipitation _________ rate and precipitation rate equal to __________ The inverse precipitation generation process and dissolution process of _________ Dynamic equilibrium: when precipitation and dissolution balance occurs, the formation and dissolution of precipitation is still proceeding, but the rate is equal. The solubility of the solutes remains the same. Change: when conditions change, the balance destroys and creates a new balance. 3. exp