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na2co3 shui jie guo cheng rong ye ph yu wen du guan xi de tan jiu
Author(s): 
Pages: 57-59
Year: Issue:  12
Journal: Education in Chemistry

Keyword:  碳酸钠水解溶液pH与温度关系实验探究;
Abstract: 盐类水解是中学化学教学中的重点和难点,温度升高会促进盐类的水解,其水解后的pH会增大,但是以碳酸钠溶液为例,通过手持技术测定,温度升高,溶液pH发生了先增大后减小的变化趋势.通过理论分析和数学计算,探究其异常变化的原因,得出用溶液pH的变化来判断水解程度的变化是不科学的.
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