Um experimento com propostas múltiplas para um laboratório de química geral

Química Nova

Déborah De Alencar Simoni¹  João Carlos De Andrade¹  José Fernando Gregório Faigle¹  José De Alencar Simoni¹ 

[1] ,Universidade Estadual de Campinas Instituto de Química Campinas SP

关键词: photochemical reactions;    kinetic;    general chemistry;   

DOI  :  10.1590/S0100-40422002000600023

来源: SciELO

【 摘 要 】

This article suggests a sequence of experiments on the preparation, analysis and some photochemical aspects of potassium tris (oxalato) ferrate(III) trihydrate. The sequence of experiments could be carried out in four or five 4-hour laboratory periods. The new part of this article is related to the kinetics studies involving the ambient illumination as well as the use of the cellophane paper of different colors as light filters. The aspects such as quantum yield, light absorption and photochemical reactions are explored in order to illustrate the relationships between the exposure time, light intensity and wavelength range on the photochemical reactions.

【 授权许可】

CC BY-NC   
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