PPT-Recrystallization and

Melting Point Summer 2012 Purification and Characterization Purification separation of target compound from impurities Characterization Identity Do I have what I think I have Purity How pure is the compound. ：. 各種置換基の. 影響. と機能性. 分子の. ナノワイヤー化. 明星大理工　〇西條純一，和田友明，石崎真也，若杉崇志，. . . 　 奥山隼斗，坂下大樹，佐々木一樹. and Melting Point. Intermolecular Forces. Hydrogen bonding. Acceptor/donor. Dipole/dipole. Dipole/induced dipole. Induced dipole/induced dipole. Also called London dispersion forces. VDWs Forces. General Principles. Microstructure-Properties. Lecture . 2: . Recrystallization. Theoretical & Practical Aspects. Profs. A.D. Rollett, M. De Graef. Updated . 27. th. September, . 2015. 2. Objectives. The main objective of this lecture is to introduce you to the process of recrystallization and to prepare you for a laboratory exercise on this topic.. January 19. Purification and Characterization. Purification: separation of target compound from impurities. Characterization. Identity: Do I have what I think I have?. Purity: How pure is the compound?. Recrystallization. Shear Stress and Dislocations. Dislocations are moved by Shear Stresses. . = applied stress = F/A. s. n. = stress normal to plane. t. r. = shear stress acting in the plane shaded. Agent . of . weathering, erosion, and deposition . – acquire, transport and deposit sediment. Occupy ~10% of land area. “Interrupts” hydrologic cycle by “locking up” water. Glacier. GLACIERS. . Solid organic compounds when isolated from organic reactions are usually impure; they are usually contaminated with small amounts of other compounds that are produced along with the desired compound. The purification of impure crystalline compounds is usually done by recrystallization from a suitable solvent or a mixture of solvents..