Improving Conceptions in Analytical Chemistry: ci Vi = cf Vf

• Arnaldo CarrasquilloJr. ^[1] ; Margarita Rodríguez-López ^[1]
  1. [1] University of Puerto Rico
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 82, Nº 9, 2005, pág. 1327
• Idioma: inglés
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• Resumen

  • A common misconception related to analytical chemistry, which may be generalized as the failure to recognize and to account analytically for changes in substance density, is discussed. A cautionary example is made through the use of mass-based units of composition during volumetric dilution. The correct application of the volumetric dilution equation ci Vi = cf Vf is discussed. A quantitative description of the systematic error introduced by incorrect use of the volumetric dilution equation is also specified.