金属的计算特别是相关混合物的计算,因涉及反应较多,根据一般的计算方法来求解,会使解题过程繁琐,甚至得不到正确答案;若能找出某种“特殊状态”来求解,则无需过问变化的途径和过程的细节,既可以避免书写化学方程式和繁杂的过程,提高解题速度,又可以培养思维的深刻性和敏捷性,解题的准确度也可以进一步提高. The calculation of metals, especially the calculation of related mixtures, involves more reactions, and solving them according to general calculation methods will make the problem-solving process cumbersome and may not even get the correct answer; if we can find out a certain “special state” To solve, you don’t need to ask details of the ways and processes of change, you can avoid writing chemical equations and complicated processes, improve the speed of problem solving, and can cultivate the deepness and agility of thinking, and the accuracy of problem solving can be further improved. .