Purification of Potash Alum by Crystallization - MeitY OLabs скачать в хорошем качестве

Purification of Potash Alum by Crystallization - MeitY OLabs

This video channel is developed by Amrita University's CREATE http://www.amrita.edu/create ▶ For more Information @ http://amrita.olabs.co.in/?sub=73&brc... ▶ Online Labs for School lab Experiments (Olabs) http://www.olabs.edu.in/ ▶ Learn more about Amrita University http://www.amrita.edu ▶ Subscribe @    / amritacreate     / onlinelabs   Copyright © 2013 Amrita University Developed by CDAC Mumbai & Amrita University under research grant from Department of IT, Government of India Purification of Potash Alum by Crystallization :- Potash alum is a double salt of potassium sulphate and aluminum sulphate. It is highly water soluble. To prepare pure crystals of potash alum, dissolve the sample in distilled water and remove the insoluble impurities by filtration. This solution is concentrated to the crystallization point and cooled. Colourless transparent crystals of potash alum separate. The soluble impurities are left behind in the mother liquor. Potash alum has an octahedral geometry. This video explains how to prepare pure crystals of potash alum form an impure sample through crystallization.