基于智能手机光传感器探究浓度对化学反应速率的影响
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摘要
利用绿色Led小灯珠作为光源,智能手机光传感器及App作为检测系统,通过测定透过光强度随时间的变化关系,探究高锰酸钾与草酸反应中反应物浓度及酸化时间对化学反应速率的影响。实验结果表明,用智能手机光传感器App法是一种低成本、简单、便携、直观可行的方法,可以使学生使用随身所带的智能手机开展实验研究,使实验教学具有趣味性和科学性,还能更好地培养学生的创新意识。
The effects of concentration of reactants and acidification time on the chemical reaction rate of acid potassium permanganate with oxalic acid have been discovered by measuring the relationship between the intensity of transmission light and time,and using Led lamp as light source,a smart phone light sensor and the App as detectors.The experimental results show that the smartphone optical sensor App method is a low-cost,simple,portable,intuitive and feasible method.Moreover,it can enable the students to carry out their experimental research using the smartphone with them.In this way,it not only makes experimental teaching interesting and scientific,but also can cultivate students′ innovative consciousness better.
The effects of concentration of reactants and acidification time on the chemical reaction rate of acid potassium permanganate with oxalic acid have been discovered by measuring the relationship between the intensity of transmission light and time,and using Led lamp as light source,a smart phone light sensor and the App as detectors.The experimental results show that the smartphone optical sensor App method is a low-cost,simple,portable,intuitive and feasible method.Moreover,it can enable the students to carry out their experimental research using the smartphone with them.In this way,it not only makes experimental teaching interesting and scientific,but also can cultivate students′ innovative consciousness better.
引文
[1]人民教育出版社,课程教材研究所,化学课程教材研究开发中心.普通高中课程标准实验教科书-化学(选修4)-反应反应原理[M].北京,人民教育出版社,2007,20.
[2]王春.草酸与高锰酸钾反应的原理探究与改进建议[J].化学教育,2010,31(5):66-79.
[3]刘厦,刘畅,李楠,等.智能手机应用于便携式检测技术的研究进展[J].分析试验室,2017,36(1):120-124.
[4]李嘉.利用安卓智能手机探究浓度对化学平衡的影响[J].化学教育.2017,38(7):65-68.
[5]张宇哲,孙雪花,任宜霞,熊巍.基于智能手机传感器紫外光度法检测维生素B(12)[J].系统医学,2018,3(22):1-3..
[6]陈久宽,杨永根.对草酸与高锰酸钾反应的探究[J].实验教学与仪器,2007(Z1):63-64.
[7]谭文生,杜伊凡.探究反应条件提高实验成功率——以浓度对化学反应速率影响实验改进为例[J].教育与装备研究,2018,34(4):60-62.
[8]刘文芳.浓度对草酸与酸性高锰酸钾溶液褪色反应速率的影响研究[J].化学教育,2011,32(10):86-88+96.
[9]孟青蕊,魏锐,王磊.基于传感技术的科学实验设计[J].信息技术教育,2007(6):12-14.
[2]王春.草酸与高锰酸钾反应的原理探究与改进建议[J].化学教育,2010,31(5):66-79.
[3]刘厦,刘畅,李楠,等.智能手机应用于便携式检测技术的研究进展[J].分析试验室,2017,36(1):120-124.
[4]李嘉.利用安卓智能手机探究浓度对化学平衡的影响[J].化学教育.2017,38(7):65-68.
[5]张宇哲,孙雪花,任宜霞,熊巍.基于智能手机传感器紫外光度法检测维生素B(12)[J].系统医学,2018,3(22):1-3..
[6]陈久宽,杨永根.对草酸与高锰酸钾反应的探究[J].实验教学与仪器,2007(Z1):63-64.
[7]谭文生,杜伊凡.探究反应条件提高实验成功率——以浓度对化学反应速率影响实验改进为例[J].教育与装备研究,2018,34(4):60-62.
[8]刘文芳.浓度对草酸与酸性高锰酸钾溶液褪色反应速率的影响研究[J].化学教育,2011,32(10):86-88+96.
[9]孟青蕊,魏锐,王磊.基于传感技术的科学实验设计[J].信息技术教育,2007(6):12-14.