Curcumine As A Natural Ph Indicator: An Experimental Theoretical Approach For Chemical Teaching
QUIMICA NOVA(2021)
摘要
This paper proposes the development of a simple experiment with easily accessible and low cost materials, enabling its practice with or without laboratory infrastructure, with feasibility for computational theoretical study. On the other hand, the objective of the work is to develop a chemical experiment that demonstrates that the chromophore curcumin (natural indicator) is responsible for indicating the acidity or basicity of a given solution. The experiment has different applicability, being useful in the approach of different chemical contents, showing potential for multi and interdisciplinary approaches. Subjects such as tautomeric equilibrium, chromophoric compounds, hydrogen potential, UV-Vis electron absorption spectra analysis and molecular modeling are explored.
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关键词
chromophore, curcumin, UV-Vis spectroscopy, theoretical study
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