The activity of the first hydrogen ion is similar to those from sulfuric acid and can be used to analyze the concentration of chromic anhydride and sulfuric acid.

• 第一个氢离子的活跃程度与硫酸释放出来的氢离子相近,可用来分析铬酐与硫酸的总浓度;第二个氢离子用来分析铬酐的浓度。