Electrochem

electrolytic capacitor cadre LESSON 7 Electrolysis/Electrolytic Cells divide 11.

3 Recall the galvanic cubicle: spontaneous overall reception booth effectiveness has a positive care for converts chemical free efficacy into galvanising cipher electrons fall from a higher potential free cleverness to a debase potential energy electrical energy passel be utilise to decease electrons from a lower potential energy to a higher potential energy a cell that uses energy to do this is called an electrolytic cell Electrolytic Cell converts electrical energy into chemical energy process is ca lled electrolysis overall reception is non-spontaneous, requires E includes electrodes, at least one electrolyte, an external schmalzy lake of electricity, and external circuit possible for electrolytic cells to have the devil half- responses take place in the same container galvanic cell reactants products + electrical energy electrolytic cell Galvanic Cell vs Electrolytic Cell Spontaneous reception Converts chemical energy to electrical energy Anode (negative): zinc Cathode (positive): copper Oxidation at anode: Zn ? Zn2+ + 2e diminution at cathode: Cu2+ + 2e ? Cu Cell reaction: Zn + Cu2+ ? Zn2+ + Cu Electrons move to cathode Anions move to anode Cations move to cathode Non-spontaneous reaction Converts electrical energy to chemical energy Anode (positive): copper Cathode (negative): zinc Oxidation at anode: Cu ? Cu2+ + 2e Reduction at cathode: Zn2+ + 2e ? Zn Cell reaction: Cu + Zn2+ ? Cu2+ + Zn Electrons move to cathode Anions move to anode Cations move to cathode 1 Predicting products of electrolysis ! bill 1: Make a list of all substances present. tick all possible oxidizing and diminution agents present. (Dont forget body of water for aqueous solutions) smell 2: Use the redox plank to diagnose the strongest oxidizing agent. issue the equation for the step-down half-reaction that occurs at the cathode, including the reduction potential, Step 3: Use the redox table to identify the strongest reducting agent. Write the equation...If you hope to get a full essay, prepare it on our website: BestEssayCheap.com

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