Electrolytic Cells Worksheet

 

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  1. How is an electrolytic cell different to a galvanic cell?

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  2. What are the units for an Ampere?

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  3. What does the term “plating” mean?

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  4. What is a useful equation for solving electrolysis problems?

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  5. How long will it take to plate out 1.0 kg of Al from aqueous AlF3 with a current of 100.0 A?           

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  6. What mass of Cr from molten CrO3 can be produced in 1.0h with a current of 15A?

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  7. An aqueous solution of an unknown salt of ruthenium is electrolyzed by a current of 2.50 A passing for 50.0 min.  If 2.618 g Ru is produced at the cathode, what is the charge on the ruthenium ions in the solution?

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  8. Electrolysis of an alkaline earth metal chloride using a current of 5.00 A for 748 seconds plates out 0.471 g of metal at the cathode.  What is the identity of the alkaline earth metal chloride?

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