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在“化学式”计算中有不少计算题,按常规解题方法,从题知数据到最终求得结果需要多个步骤,解题过程相当繁琐.如果我们能够正确的找到已知和待求间量的关系,即直接建立起已知量和待求量之间的关系式,在计算时,就可以省去中间步骤直接求解,使计算简化.这种解法,我们称之为“关系式”法.利用关系式法解题,关键是要正确找到已知量和待求量之间的量的关系,得到正确的“关系式”.
There are many calculation questions in the “chemical formula” calculation. According to the conventional solution method, multiple steps are required to obtain the final result from the knowledge data, and the problem solving process is quite complicated. If we can find and know the correct information Seeking the relationship between quantities, that is, the relationship between the known quantity and the quantity to be sought can be established directly. When calculating, the intermediate steps can be omitted to solve directly and simplify the calculation. In this solution, we call it “ Relation ”method.Using the relational method to solve the problem, the key is to correctly find the relationship between the amount of known and the amount to be sought, get the correct “ relationship ”.