Warning: include(../include/header.inc.php) [function.include]: failed to open stream: No such file or directory in /data/foodmate/lesson/42/6.php on line 12

Warning: include() [function.include]: Failed opening '../include/header.inc.php' for inclusion (include_path='.:/usr/local/php/lib/php') in /data/foodmate/lesson/42/6.php on line 12

酸碱滴定法

基本要点：

1. 掌握酸碱平衡及溶液pH值的计算；

2. 了解酸碱指示剂的原理及变色范围；

3. 掌握酸碱滴定过程中pH突跃及指示剂的选择。

4．了解酸碱滴定法的应用。

酸碱滴定法：利用酸碱反应（以质子自递反应为基），通过滴定操作以测定酸或

碱的分析方法。

基本反应：H3O+ + OH-? 2H2O通常不发生

H3O+ + A-? HA + H2O任何外观变化

完成滴定反应的两个关键问题:

1. 何时滴定结束？

2. 怎样知道被滴定溶液的pH值已达要求？

Warning: include(../include/footer.inc.php) [function.include]: failed to open stream: No such file or directory in /data/foodmate/lesson/42/6.php on line 50

Warning: include() [function.include]: Failed opening '../include/footer.inc.php' for inclusion (include_path='.:/usr/local/php/lib/php') in /data/foodmate/lesson/42/6.php on line 50