求翻译：本实验是为了培养学生通过用NaOH溶液测定盐酸-氯化铵混合溶液中各组分的含量，掌握配制NaOH标准溶液的方法，学会用甲醛法进行弱酸的强化，掌握分步滴定的原理与条件。HCl—NH4Cl混合溶液中，HCl是强酸，可以直接滴定；NH4+（cKa是什么意思？

This experiment is to train students through the use of NaOH solution hydrochloride - mixed solution of ammonium chloride content of each component, to master methods of preparation of standard solution of NaOH, learn to strengthen weak formaldehyde method, step by step to master the principles and

正在翻译，请等待...

正在翻译，请等待...

This experiment was designed to develop students ' through the determination of hydrochloric acid with NaOH solution-content of ammonium chloride in mixed solution components, master the methods of NaOH standard solution prepared, learn to use formaldehyde method for enhancement of weak acids, maste

This experiment was designed to develop students ' through the determination of hydrochloric acid with NaOH solution-content of ammonium chloride in mixed solution components, master the methods of NaOH standard solution prepared, learn to use formaldehyde method for enhancement of weak acids, maste