CHEM 141 Lecture Notes - Lecture 3: Photochemistry, Baking Powder, Intermolecular Force
Document Summary
Gen chem 141 labs: take piece of coke can and convert it to crystal, alum using sight and feel to determine what"s going on. Why do labs: learn how to experiment, be observant, be curious, why does it look/behave like this, work with chemicals, see changes take place, analyze chemicals and mixtures, identify what and how much of it there is. Growing crystals of alum: vsepr: shapes of molecules and ions, crystalviewer and crystalmaker, gasometric analysis: baking powder (alum + nahco3 acid/base, kidney stones. Gravimetric analysis of calcium: calcium oxalate monohydrate: solid state crystals oxalic acid: intermolecular forces, calorimetry heats of fusion, reaction. Mars rover sent it up due to curiosity. 250 ml erlenmeyer flasks: first exposure to crystallography top bin for samples. 250 ml erlenmeyer flasks: first exposure to crystallography, 45 flasks in 3 rosw of 15. 50 ml volumetric flasks location of lab workstations.
