Which Requires the Most Electricity (In Terms of Faradays of Charge

question 92

Multiple Choice

Which requires the most electricity (in terms of faradays of charge transferred) per gram of useful product formed?

• A)electrolysis of aqueous NaCl (chlor-alkali industry)
• B)electrolysis of molten NaCl/CaCl₂ in a Downs cell
• C)electrorefining copper metal
• D)production of aluminum in the Hall-Heroult process

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