CHEM 1050 Lecture Notes - Lecture 23: Electrical Network, Ampere, Lead

• School: University of Guelph
• Department: Chemistry
• Course: CHEM 1050
• Professor: Mario Monteiro

Document Summary

Homework: 19. 71, 19. 73, 19. 79, 19. 81, 19. 89, 19. 95, 19. 109. Electrolysis with active electrodes they participate in redox reactions the electrode will be oxidized is greater than that for water. Nickel is oxidized more readily than water. 2h2o(l) 4h+ (aq) + o2 (g) + 4e- eox = -1. 23 v. Ni(s) ni+2 + 2e- eox = +0. 28 v cathode is plated with nickel. Nickel dissolves in the anode, and goes and ni+2 lands on the negatively charged cathode. Anode: ni(s) ni+2 + 2e- cathode: ni+2 + 2e- ni(s) the object that is being electroplated is always the cathode. Quantity aspects of electrolysis i. e. 1 mole of electrons will plate out" 1 mole of na metal and 2 moles of electrons will plate out 2 moles of na metal. 2 moles of electrons give 1 mole of copper. 3 moles of electrons 1 mole of aluminum recall: the quantity of charge passing through an electrical circuit is measured in coulombs.