Potentiometric Determination of CO2 Concentration in the Gaseous Phase:: Applications in Different Laboratory Activities

• Eduardo Cortón ^[1] ; Santiago Kocmur ^[1] ; Liliana Haim ^[1] ; Lydia Galagovsky ^[1]
  1. [1] Universidad de Buenos Aires

     Universidad de Buenos Aires

     Argentina

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 77, Nº 9 (September), 2000, págs. 1188-1188
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Four simple experiments are described, in two laboratory sessions of 3 hours each. They provide high school students of a combined science course with the opportunity to review and integrate many topics while participating in a hands-on activity that resembles real industrial problems. The first lab comprises the calibration of a CO2 potentiometric detector with gas mixtures. The CO2 and CO2-free air required for the gaseous samples are produced in the lab by an inexpensive and simple apparatus. In the second lab, the CO2 potentiometric device is used to measure CO2uptake and release during different metabolic processes. The variation of CO2 production will be also estimated while changing the air/fuel proportion in a Bunsen burner.