Cynthia G. Zoski, Research Professor of Chemistry and Associate Director of the Center for Electrochemistry, The University of Texas at Austin, USA, is co-author of the solutions manual for the 2nd and 3rd editions of Electrochemical Methods. Her current research focuses on electrochemistry at the micro- and nanoscale in order to understand practical chemical, physical, materials, and biologically-related problems. Johna Leddy, Associate Professor, The University of Iowa, USA is co-author of the solutions manual for the 2nd edition of Electrochemical Methods. Her electrochemical research interests range from fundamentals through measurements to build of electrochemical energy systems. Of special focus are classical modeling methods, modified electrodes, and magnetic effects on electron transfer.