© Cambridge University Press 2010 Brian J. Kirby, PhD Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY Powerpoint Slides to Accompany Micro- and Nanoscale Fluid Mechanics: Transport in Microfluidic Devices Appendix B

© Cambridge University Press 2010 Electrolyte solutions can be described by use of terminolgy specific to solutions The primary chemical reactions that control fluid flow in microfluidic systems are acid-base reactions, described by the Henderson- Hasselbach equation and the water dissociation reaction App B: Properties of Electrolyte Solutions

© Cambridge University Press 2010 Electrolyte solutions are described in terms of molar concentration, molarity, normality, osmolarity, and ionic strength Symmetric electrolytes have anions and cations whose valences are of equal magnitude Sec B.2: Properties of Electrolyte Solutions

© Cambridge University Press 2010 acid dissociation and recombination can be described with an acid dissociation constant, which is a special case of an equilibrium constant Sec B.3: Acid-Base Chemistry

© Cambridge University Press 2010 The Henderson-Hasselbach equation relates the pH-pKa difference to the ratio of weak acid and conjugate base Sec B.3: Acid-Base Chemistry