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?
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text: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?
Expert Solution
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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