CHM135H1 Lecture Notes - Lecture 34: Alessandro Volta, Luigi Galvani, Redox
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CHM135H1 Full Course Notes
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Chm135h1 f - lecture 34 - chapter 18 (4) 1600: william gilbert defines electric force, magnetic poles and attraction. 1751: benjamin franklin demonstrates lightning is electricity; develops the lightning rod; introduced in 1760. 1767: joseph priestly discovers that electricity follows same law as newton"s inverse square law of gravity. 1780: luigi galvani builds a crude electric cell with two different metals and natural juices of a frog . 1800: alessandro volta modified galvani"s cell, substituting other metals and replacing biological material with wet pasteboard: connected a pile of cells into a powerful battery. What happens if a strip of zn(s) is put in a solution of cuso4: initially blue solution turns clear, copper metal forms on zn strip. Zn (s) + cuso4 (aq) znso4 (aq) + cu (s) The oxidation process is: zn(s) zn+2 (aq) + 2e- The reduction process is: cu+2 (aq) + 2e- cu(s) A redox reaction is like the transfer of a proton in acid/base chemistry:
