Focus on 5 Core Modules: (1) Electrochemical & Potentiometric Sensors, Dissolved Oxygen measurement, QDSSCs; (2) Pitting & Water-line corrosion, Electroless plating; (3) VSEPR Theory, Z-matrix of H2O, MO diagram of O2; (4) Polymer molecular weights (Mn, Mw), Polycarbonate, Polypyrrole; (5) E-waste toxic hazards, Pyrometallurgical vs Hydrometallurgical copper extraction.
Key Points: Must draw the Clark electrode diagram, write the anode (lead/silver oxidation) and cathode (oxygen reduction: O2 + 4e- + 2H2O -> 4OH-) reactions, and describe current proportionality to DO concentration.
Key Points: Include flowcharts for both processes. Pyrometallurgy: high temperature smelting, slag formation, air emissions. Hydrometallurgy: acid/alkali leaching, solvent extraction, electrowinning. Advantages: lower emissions, higher purity, energy efficient.
Key Points: Draw energy axis, 1s/2s/2p atomic orbitals combining into sigma and pi MOs. Electronic configuration: sigma 1s2 sigma* 1s2 sigma 2s2 sigma* 2s2 sigma 2pz2 pi 2px2 pi 2py2 pi* 2px1 pi* 2py1. Bond Order = (10 - 6)/2 = 2. Unpaired electrons in pi* prove paramagnetism.
Key Points: Pitting: differential aeration beneath dust/debris particle where oxygen-deficient pit acts as small anode, surrounding exposed metal acts as large cathode causing deep localized cavities. Water-line: metal area just below water level has lower oxygen (anode) and undergoes accelerated corrosion.
Upload your Chemistry for Computer Science Cluster lecture slides to generate spaced repetition study cards in seconds.