ALTERNATIVE SOURCE FOR OXIGEN OBTENTION ONLABORATORY SCALE
DOI:
https://doi.org/10.47187/perf.v1i34.331Keywords:
Chemical education, ecofriendly, sustainable, easy obtainingAbstract
Trials for Oxygen preparation at laboratory scale and its reactions to study their chemical properties are useful and stonishing assays and become an valuable pedagogical tool for educators and novice or first years chemistry students. Potassium chlorate KClO3 has been traditionally used for oxygen obtention, however in April 2023, the Ecuadorian Government enacted a national law that makes difficult the acquisition, transportation and storage of this chemical reagent, acause of this new laws its important get alternative ways to O2 preparation. Here, we present an alternative method to obtain oxygen, based on the catalytic decomposition of hydrogen peroxide (H2O2), employing several substances as catalysts sourse, a set of five different catalyst were studied. Best results were obtained with powdered yeast, achieving larger oxygen gas volume and lower standard deviation for the experimental data, with good repeatability.
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