This book is an essential guide for both academicians and those who wish to pursue their interest in physical chemistry. Physical chemistry focuses on understanding chemical systems with respect to the diverse principles of physics. Different approaches, evaluations, methodologies and advanced studies on physical chemistry have been included herein. This book is compiled in such a manner that it will provide in-depth knowledge about the theory and practice of this field. It will serve as a reference to a broad spectrum of readers. With its detailed analyses and data, this book will prove immensely beneficial to professionals and students involved in physical chemistry at various levels.