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金属活动性顺序是历年来中考命题的热点,题目的难易不同,题型各异·因此对金属活动性顺序表的正确理解和灵活运用十分重要·我们主要从以下几个方面对其进行理解·1·金属与酸发生反应(1)金属应是在金属活动性顺序中排在(H)前面的金属·(2)单质铁与酸发生置换反应时生成亚铁盐
The sequence of metal activity is the hot spot of the examination propositions over the years. The difficulty of the topics is different, and the types of questions are different. Therefore, it is very important for the correct understanding and flexible use of the metal activity sequence table. We mainly understand the following aspects: ·1· Metal reacts with acid (1) Metal should be metal (H) in front of the metal activity sequence. · (2) Ferrous salt is generated when the elemental iron undergoes a substitution reaction with an acid.