Match each industrial electrolytic process on the left with its corresponding chemical characteristic or operating condition on the right.
- Hall-Héroult ProcessElectrolysis of molten alumina dissolved in molten cryolite using carbon electrodes
- Electrorefining of CopperImpure metal serves as the dissolving anode while pure metal deposits at the cathode
- Electroplating of Iron with SilverThe article to be coated serves as the cathode in an electrolyte containing silver ions
- Chlor-Alkali ProcessElectrolysis of concentrated brine yielding chlorine gas, hydrogen gas, and sodium hydroxide
Answer
Hall-Héroult Process matches with 'Electrolysis of molten alumina dissolved in molten cryolite using carbon electrodes'. Electrorefining of Copper matches with 'Impure metal serves as the dissolving anode while pure metal deposits at the cathode'. Electroplating of Iron with Silver matches with 'The article to be coated serves as the cathode in an electrolyte containing silver ions'. Chlor-Alkali Process matches with 'Electrolysis of concentrated brine yielding chlorine gas, hydrogen gas, and sodium hydroxide'.
Each industrial process relies on specific redox reactions and cell configurations: Hall-Héroult process uses molten cryolite as a solvent for alumina; copper refining uses impure copper as the dissolving anode; electroplating places the article to be coated at the cathode; chlor-alkali electrolyzes brine to yield chlorine, hydrogen, and sodium hydroxide.
Step-by-Step Solution
Key Concept
Industrial applications of electrolysis including metal extraction, refining, electroplating, and chlor-alkali synthesis