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在中学化学教学中,经常遇到硝酸盐和铵盐的分解。本文略谈这两种盐分解的教学体会。 一、硝酸盐的分解 硝酸盐分解后都有氧气产生。根据组成硝酸盐的金属的活动性不同,硝酸盐分解产物可以分为下列三种:金属的亚硝酸盐、金属氧化物和金属单质,后两种情况还同时得到二氧化氮。 1.活动性比Mg强的金属的硝酸盐分解,如下式:
In chemistry teaching in middle schools, the decomposition of nitrates and ammonium salts is often encountered. This article briefly discusses the teaching experience of these two salt decompositions. I. Decomposition of Nitrate Oxygen is produced after the decomposition of nitrate. According to the different activities of the metals that make up the nitrate, the nitrate decomposition products can be divided into the following three types: metal nitrites, metal oxides, and metal elements, and in the latter two cases, nitrogen dioxide is simultaneously obtained. 1. Nitrate decomposition of metals that are more active than Mg, as follows: