第三单元盐类的水解教(学)案（Third unit salt hydrolysis teaching (learning) case）.docVIP

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第三单元盐类的水解教(学)案（Third unit salt hydrolysis teaching (learning) case）.doc

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第三单元盐类的水解教(学)案（Third unit salt hydrolysis teaching (learning) case）

第三单元盐类的水解教(学)案（Third unit salt hydrolysis teaching (learning) case） Third unit salt hydrolysis teaching (learning) case Hydrolysis of salts [learning goal] 1.. Understanding the phenomena and essence of hydrolysis of salts, and explaining the hydrolysis of strong bases, weak acids, salts and strong acids and weak bases. 2. can use the rule of hydrolysis of salt to judge the acidity and basicity of salt solution, and can write the ionic equation of salt hydrolysis. [study emphasis] the essence of hydrolysis of salts [learning difficulty] hydrolysis of salt hydrolysis equation [review introduction] 1, acids have strong acids and weak acids, and bases have strong bases and weak bases. What kinds of salts can be formed between them? Composition of salt: acid + base = Salt + water Strong acid, alkali, strong acid, alkali salt, such as: NaCl, Strong acid, weak base, salt, NH4Cl, Weak acid, weak base, weak acid, alkali salt, CH3COONa, Weak acid, weak base salt, CH3COONH4, 2. The solution is acidic, the alkaline solution is alkaline, and the salt solution must be neutral? [activity and inquiry,]P79 The acidity and alkalinity of the salt solution produces the salts of acids and bases, the types of salts, sodium chloride, sodium carbonate, sodium acetate, ammonium chloride, aluminum chloride [discussion], 1.CH3OONa solutions are alkaline, and why? CH3OONa=CH3OO - + Na+ + H2O H+ + OH- CH3COOH General chemical equation Total ionic equation The _____ solution (with or without) weak electrolyte (chemical formula: _________) generation, the ionization equilibrium water (destroyed or unaffected), and to the direction of movement, and thus (promoting or inhibiting) ionization of water. C (H+) C (OH -) (fill in or = =). [discussion] 2.NH4Cl solution is acid, why? General chemical equation Total ionic equation The _____ solution (with or without) weak electrolyte (chemical formula: __________) generation, the ionization equilibrium water (destroyed or unaffected), and to the dir