It has been always an incentive for students to find out whether his or her efforts to solve exercises have provided correct results, or to find tips for problems that he or she finds more difficult. These are the main reasons for the appearance of this book. As part of the textbook "Modern Electrochemistry 1: Ionics", "A Guide to Problems in Modern Electrochemistry: Part 1: Ionics" compiles many of the solutions to the exercises and problems presented in the text, as well as many new problems.