'Redox rxn' presentation slideshows

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CH. 20 ELECTROCHEMISTRY

CH. 20 ELECTROCHEMISTRY. Electrochemical Cells : classified as Galvanic Cells *spontaneous chem rxn that produce E Electolytic Cell. MAIN CONCEPTS Galvanic Cell Electolytic Cell -electroplating Cell Potentials Nernst Equation Balance 1 / 2 -Rxns

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Enzymes: The Biological C atalysts

Enzymes: The Biological C atalysts. Energy of Activation. Most rea ctions do not start spontaneously They require energy, such as a spark, to get started. This is called activation energy. Energy of Activation.

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Redox Basics

Redox Basics. #68. Assign OX# a. UO 2 2+ Net charge is 2+ and OX#(O) = -2. Therefore 2+ = OX#(U) +2(-2) = 2+. Or OX#(U) = +6 c. NaBiO 3 Net charge = 0. OX#(O) = -2, OX#(Na) = +1. Therefore 0 = +1 + OX#(Bi) + 3(-2). Or OX#(Bi) = +5

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Galvanic Cells

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Galvanic and Electrolytic Cells

Galvanic and Electrolytic Cells. SCH 4C1. Review. Zn (s) + Cu 2+ ( aq ) ? Cu (s) + Zn 2+ ( aq ) Zinc is oxidized, Copper is reduced The Cu 2 + removes two electrons from the Zn atoms Zn (s) ? Zn 2+ ( aq ) + 2e - Cu 2+ ( aq ) + 2e - ? Cu (s). Galvanic Cell (copy).

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Electrochemical Cells

Electrochemical Cells. For this lesson you will need: Activity series of metals (in reference packet) Standard reduction potential table (handed out yesterday). The Big Questions. What is an electrochemical cell? What are anodes and cathodes?

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