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多年中学教学中总结出,部分习题可用图示法解决,图示法可以让学生直接、明了地进行估算。一、多元弱酸盐中过量和不过量离子方程式例1.写出石灰水中通入CO_2到过量CO_2各阶段离子方程式。
Many years of high school teaching concluded that part of the exercises can be solved by the pictorial method, pictorial method allows students to directly and clearly estimated. A, multiple weak acid salt in excess and not excessive ion equation Example 1. Write out lime water into the excess CO2 throughout the ion equation.