University:
Swansea University
Course:
EGA109 | Introductory Organic Chemistry
Academic year:

2023
Views:

235

Pages:

2
Author:

Sanjeev K

Energy DevicesElectrochemical cellGenerate electrifrom spontaneous nedox OG<0Galvanic/voltricUses electricity to drive non sp nedox DG >0Consists Electrolytic of -2 electronic conductors (electrodes)ionic conductor, cy e conductor used to linkelectrodes is oftena metal were,such as CuGalvanii/VittaicAnode oxidation LHS , Cathode reduction RHSMetal (orsolid plans) IElectrolyle(whileZnl Zn(1503), (IM)CU(NOS) 2 (IM) I Cuoxd": M, MM nentntRed" : M2 monthe M2=7M,/M,M(G)M2nt(CallntM2Daniell Cell -John Frederic DanielleisAEach electr ode half cellVCathodeSalt bridge (KCl or NH4Cl) Ande+salt bridgeCuIninmaintains charge balance in thegelatine form +KUtwo half cells ofZndDrCuso4 minimizes on climunales the liquid junctionpotential cell emt = 1.1VEmFMax PD b/w the electrodes of DG20 allrelated to tendency of an element a compoundor an ion to acquiri(ie-gain) or release(lose) iall reaction feasible when Full 70Full = EM, - EM2 + 0.059 legu 10 [M,"n[marySRP of cathodeamodeSRPsedredpel.Full ' Ecathode - Eamode + 0.059 n lego[Red ][Oxd ]Electrolysis of motten NallNa+ gains is cy reduced to Na at cathodeNa+ near cathode depleted, Har war additionalNat migrate inNet movement of Cl to anode, oxidized to Cl2the terminal to anode, ve calhode forces is to monefrom anote to cathodeperformed at ~80ic , inert electrodes usedCathide 2NateH2e 2Na(l)Ande2U (l) (2(g)+ 2e2Nacliet2Nalit (2,(9)