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一、守恒法的分类与应用守恒法只需依据化学式中某两个数(例如是总的化合价,正负电荷总数)是始终不变,或者几个连续化学方程式中某粒子(例如电子,原子)的物质的量保持不变,免去烦琐的化学方程式书写步骤,计算过程来提高化学计算题的解题速度和精确性。1.电荷守恒电荷守恒的核心概念是溶液中阳离子的正电荷总数与阴离子的负电荷总数一致。例1将CaCl_2和CaBr_2的混合物13.400g溶于水配成500.00mL溶液,再通入过量的Cl_2,完全反应后将溶液蒸干,
First, the conservation classification and application of conservation method according to the chemical method only two numbers (for example, the total valence, the total number of positive and negative charge) is constant, or several continuous chemical equation of a particle (such as electrons, atoms ) Of the amount of material remains unchanged, eliminating cumbersome chemical formula writing steps, calculation process to improve the chemical calculation of the problem-solving speed and accuracy. 1. Charge Conservation The core concept of conservation of charge is that the total number of positive charges in the solution is the same as the total number of negative charges in the anion. Example 1 The mixture of CaCl 2 and CaBr_2 13.400g dissolved in water dubbed 500.00mL solution, and then into excess Cl_2, the reaction was completely evaporated to dryness,