This book is essential for beginners as well as for college and university science students. The knowledge of chemical thermodynamics is very essential and very useful in every walk of life. This subject generally falls under the branch of Physical Chemistry. This book specially focused on thermodynamics properties of solutions and contain notes related to ideal and non-ideal solutions, Raoult's law, Henry's law, vapour pressure curves, Duhem-Margules equation, colligative properties, etc. The last chapter is the exercise consists of selected short question banks, MCQs and self-assessment questions.