Mini-project on fermentation of sugarcane juice for practical general chemistry courses

Química Nova

Silva, Camila Nunes da¹  Engelmann, Tamiris Lima¹  Peixoto, Carlos Roberto de Menezes¹  Santos, Bianca Trevizan dos¹  Universidade Federal do Rio Grande, Santo Antônio da Patrulha, Brasil¹  Rosa, Gilber Ricardo¹ 

关键词: sugar cane;    fermentation;    chemical education.;   

DOI  :  10.1590/S0100-40422012000800032

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This paper describes a five-week mini-project for a general chemistry laboratory course. Activities are included preparations of ethanol and sucrose solutions, calculation of concentrations, determination of densities with densimeters, sugarcane juice fermentation with CO2 capture in alkaline solution, distillation, and determination of amounts of ethanol and CO2 formed. Abilities and concepts normally present in practical general chemistry courses are covered: use of balances, volumetric glassware and densimeters, preparation of solutions, performing of dilutions, determination of solution densities, observation of chemical reactions, stoichiometric calculations, separation of mixtures, and titration.

【 授权许可】

Unknown