差量法是根据在化学反应中反应物与生成物的差量和造成这种差量的实质及其关系,列出比例式求解的解题方法。我们甚至把“差量”看成是化学方程式中的一种特殊产物。该差量的大小与参与反应的物质的有关量成正比。一般说来,化学反应前后凡有质量差、物质的量差、气体体积差、压强差、质量 Difference method is based on the chemical reaction in the difference between the reactants and products and the nature of the difference caused by the relationship between them and lists the proportion of solving the problem solving method. We even think of “delta ” as a special product of the chemical equation. The magnitude of this difference is proportional to the amount of substance involved in the reaction. In general, before and after the chemical reaction where there is poor quality, poor material quality, gas volume difference, pressure difference, quality