金属与酸、金属与盐的置换,酸、碱、盐之间的复分解计算在各类检测中屡见不鲜,简捷、快速、准确的求解成为教与学的热点,笔者就这一问题的处理技巧作一介绍,供参考。 一、置换反应时遵循等价置换 金属与酸、金属与盐发生置换反应时普遍遵循等价置换规律,抓住等价置换规律建立关系式可迅速解题。 Replacement of metals and acids, metals and salts, and complex calculations between acids, bases, and salts are common occurrences in various types of tests. Simple, fast, and accurate solutions have become hot spots in teaching and learning. The authors have dealt with this problem. An introduction for reference. First, the replacement reaction follow the equivalent replacement Metal and acid, metal and salt replacement reaction generally follow the law of equivalent substitution, seize the equivalent replacement rule to establish relations can quickly solve the problem.