Carbon Dioxide Absorbers: An Engaging Experiment for the General Chemistry Laboratory

Autor:	Thomas M. Ticich
Rok vydání:	2010
Předmět:	Absorption (acoustics) Spacecraft Chemistry Ideal gas law business.industry Direct method Nuclear engineering Analytical chemistry General Chemistry Lithium hydroxide Education chemistry.chemical_compound General chemistry Carbon dioxide business Stoichiometry
Zdroj:	Journal of Chemical Education. 88:189-191
ISSN:	1938-1328 0021-9584
DOI:	10.1021/ed100826p
Popis:	A simple and direct method for measuring the absorption of carbon dioxide by two different substances is described. Lithium hydroxide has been used for decades to remove the gas from enclosed living spaces, such as spacecraft and submarines. The ratio of the mass of carbon dioxide absorbed to the mass of lithium hydroxide used obtained from this static method compares favorably with results in the literature that use a more complex constant-flow method. The method also works well for ethanolamine, another commonly used carbon dioxide absorber. The experiment for the general chemistry laboratory serves both quantitative and qualitative learning goals. Students compare stoichiometric calculations that assume a complete reaction with their experimental results to motivate use of the latter in predicting the amount of lithium hydroxide required for space missions. They use the ideal gas law to determine the mass of carbon dioxide absorbed. Their data allow a comparison of the performance characteristics of th...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6e1ebb36e742bf3a46c14eeb7d192602 https://doi.org/10.1021/ed100826p Zobrazit plný text záznamu