This book is the last of the seven-volume series, which provides an extensive coverage of several topics of physical Chemistry. Volume 7 has been designed to assist the students to understand theory, procedures, etc. Of an experiment before they actually perform it in the laboratory. Wherever possible, analysis of data of the experiment obtained by a student is added as an Annexure to the experiment. This also includes the computational analysis involving leastsquare fitting of data of the experiment.