RE 302, Materials for Renewable Energy Lab 3: Objective: The purpose of this lab is the use of adequate materials and chemical energy to light up a Light Emitting Diode LED. Equipment: Electrical wires. 2 beakers. I wet filter paper with Na250, solution with high ionic conductivity Chemicals: Zinc Sulphate ZnSO4, Ferric Chloride FeCls, Copper (II) Sulphate Cuso, Lead Nitrate Pb(NO3)2 I LED 1 Multimeter. Fe, Zn, Pb and Cu plates. Distilled water Procedure and questions: The given table provides the standard potentials of several given redox reactions. Explain the operation principle of a LED. 04H" + 4e-2H0 Using the given table, the given chemicals and the minimum equipment, fabricate a device able to turn on a LED illuminating at a voltage of about 1.5 V. Explain in details your choice and the operation mode of your device. 3- Choose a title for the lab. Half Reaction Pb CI 2e2F 2e Pol 20 2CH 1 - AG 2- stronger oxidizing agent C Standard Potential (V) 2.87 1.67 1.36 +123 +0.80 +0.77 +0.34 0.00 -0.13 -0.44 -0.76 .166 236 stronger reducing agent- + te Ag te Fo? 2e Cu + 2H - 2e PD 20 Fe 2e Zn Se Al 2 te LI PD Fe Zn AP Mig! Mg -3.05 2021/2022