氢醌容量法测定金时滴定温度及其相关问题的讨论

Hydroquinone Capacity at the Titration Method of Temperature and Otherre1ated Issues Discussed

氢醌与金的氧化还原速度较慢,容易产生滴定误差,主要是第二步岐化反应比较慢。不少工作者往往以提高滴定温度来加快反应速度,但容易出现灰色,结果会偏低。作者经过实验,发现只要注意控制滴定温度,就可以避免出现灰色,测定结果准确可靠。

hydroquinone and the redox s 1 ow, prone to error titration, and the second step is re1 ativel y slow disproportion- ation reaction, man, workers tend to raise the temperature to accelerate the reaction rate ,but prone to gray, the results wil 1 be 1 ow, est authors found that aslong as the temperature control titration,grey could have been avoided, of the results are accurate and reliable.