Print version ISSN 0100-4042
PEIXOTO, Carlos Roberto de Menezes et al. Mini-project on fermentation of sugarcane juice for practical general chemistry courses. Quím. Nova [online]. 2012, vol.35, n.8, pp.1686-1691. ISSN 0100-4042. http://dx.doi.org/10.1590/S0100-40422012000800032.
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.
Keywords : sugar cane; fermentation; chemical education.