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化学方程式计算,是初中化学计算中最重要的一种。现收集了同学们在练习中常出现的错误,希望能从中认真吸取教训。一、化学方程式没配平例19克铝片放人稀盐酸中,能放出多少克氢气?错解设能放出X克氢气。错解分析正确书写化学方程式是进行有关计算的前提,而本题的化学方程式
The calculation of chemical equations is the most important type of chemical calculation in junior high school. The mistakes that students often make during practice are collected and I hope they can learn lessons from them. First, the chemical equation is not equipped with flat tablets 19 grams of aluminum tablets released in diluted hydrochloric acid, how many grams of hydrogen can be released? The wrong solution can release X grams of hydrogen. Wrong solution analysis The correct writing of chemical equations is the premise of the calculations, and the chemical equations of this question.