掌握温度和溶剂量都不改变条件下的溶解度计算 ,是初中化学计算中的重要内容 .认真审题 ,正确理解题意是解题的关键 .明确题目的已知量和所求量 ,分析题目中各种数据的类型和关系 ,理出解题思路 ,是解题前的重要准备 .溶解度计算中的数据类型主要有 :一、必用的基本数据例 1　 It is an important part of junior high school chemistry calculations to grasp the temperature and the amount of solvent without changing the solubility calculation under the conditions. Carefully examining questions and correctly understanding the meaning of the questions are the key to solving the questions. Knowing the known quantity and the required quantity of the questions, analyzing the questions The types and relationships of various data, and the idea of ​​solving problems, are important preparations before solving problems. The types of data in solubility calculation are: 1. Basic data examples that must be used 1