Digital Capacitance Meters in the Physical Chemistry Lab

• Roy W. Clark ^[1] ; Michael J. Smith ^[1]
  1. [1] Middle Tennessee State University

     Middle Tennessee State University

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 75, Nº 6 (June), 1998, págs. 768-768
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Modern digital capacitance meters can be used in the physical chemistry laboratory for dielectric constant experiments, replacing older tube-type instruments. This paper cautions that the type of digital meter must be known. Our investigation found that the self-balancing bridge type of digital capacitance instruments were superior to the RC time constant digital meters. The digital capacitance meter must apply a waveform to the cell which has no dc component. Otherwise drift results, especially for polar solvents.