利用手持技术探究酸碱性对高锰酸钾氧化性的影响

Study on Effects of Acidity and Alkalinity on the Oxidability of Potassium Permanganate by Handheld Technology

高锰酸钾作为常用的氧化剂,其氧化性强弱与体系酸碱性相关。通过手持技术,利用氧化还原电势(ORP)传感器和pH传感器去探究体系酸碱性对高锰酸钾氧化性的影响。实验发现:pH在酸性条件下,高锰酸钾溶液的氧化性明显增强,随着体系pH的减小,氧化性继续增强;在碱性条件下,其氧化性明显减弱,随着体系pH的增大,其氧化性继续减弱。实际实验中需要根据各种综合因素选用适宜酸碱性的高锰酸钾溶液做氧化剂。

Potassium permanganate is a common oxidizing agent,and its oxidizing strength is related to the acid base of the system.The effects of system acidity and alkalinity on the oxidability of potassium permanganate were investigated by using the REDOX potential(ORP)sensor and pH sensor with handheld technology.The results showed that the oxidation of potassium permanganate solution was significantly enhanced under acidic conditions,and continued to increase with the decrease of pH value.Under alkaline conditions,its oxidizability decreased obviously,and with the increase of pH value,its oxidizability continued to decrease.In the actual experiment,potassium permanganate solution suitable for acid and base should be selected as oxidizer according to various comprehensive factors.