19.95 In the commercial preparation of aluminum, alu- minum oxide, Al,O3, is electrolyzed at 1000°C. (The mineral cryolite is added as a solvent.) Assume that the cathode reaction is Al+ + 3e¯→ Al How many coulombs of electricity are required to give 3.09 kg of aluminum?
19.95 In the commercial preparation of aluminum, alu- minum oxide, Al,O3, is electrolyzed at 1000°C. (The mineral cryolite is added as a solvent.) Assume that the cathode reaction is Al+ + 3e¯→ Al How many coulombs of electricity are required to give 3.09 kg of aluminum?
General Chemistry - Standalone book (MindTap Course List)
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Chapter19: Electrochemistry
Section: Chapter Questions
Problem 19.95QP: In the commercial preparation of aluminum, aluminum oxide, Al2O3, is electrolyzed at 1000C. (The...
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Step 1
Given:
Mass of Al = 3.09 Kg = 3090 g
Reaction at cathode: Al+3 + 3e- → 3Al
Step 2
Calculation for amount of electricity required:
For 27 g of Aluminium 3F of electricity is required.
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