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中学化学课本及参考书在处理有关结晶水合物溶解度的计算时都把无水物作溶质,然后列方程或方程组求解。能否把结晶水合物作溶质进行相应的计算呢? 答案是肯定的。这是因为这些物质在一定温度范围内析出时以结晶水合物形式存在,很自然我们就可在相应温度范围内把结晶水合物作溶质进行有关计算。下面以CuSO_4的结晶水合物CuSO_4·5H_2O为例说明。
High school chemistry textbooks and reference books treat anhydrous materials as solute in the calculation of the solubility of crystalline hydrates, and then solve equations or equations. Can the crystal hydrate be used as a solute for the corresponding calculation? The answer is yes. This is because these substances exist in the form of crystalline hydrates when they precipitate within a certain temperature range. Naturally, we can calculate the hydrates as solute in the corresponding temperature range. The crystal hydrate CuSO_4·5H_2O of CuSO_4 is used as an example.