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Questions and Answers
What is the purpose of the iron screen in the electrolytic cell?
What is the purpose of the iron screen in the electrolytic cell?
To separate the products of electrolysis and collect them separately.
What is the melting point of sodium chloride?
What is the melting point of sodium chloride?
801°C.
What are the two products of electrolysis in the cell?
What are the two products of electrolysis in the cell?
Sodium and chlorine gas.
What happens to the molten sodium in the cell?
What happens to the molten sodium in the cell?
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What is added to the sodium chloride to reduce its melting point?
What is added to the sodium chloride to reduce its melting point?
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Study Notes
Electrolysis of Sodium Chloride
- The iron screen in the electrolytic cell acts as a barrier to prevent the sodium and chlorine from reacting with each other.
- Sodium chloride's melting point is 801°C.
- The two products of electrolysis in the Downs cell are molten sodium metal and chlorine gas.
- Molten sodium is collected at the cathode (negative electrode) and is drained off.
- Calcium chloride is added to sodium chloride in the Downs cell to lower its melting point to approximately 600°C, making the electrolysis process more efficient.
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Description
Test your knowledge on the components of a down cell electrolysis setup with this quiz. Learn about the steel container, firebrick lining, graphite anode, chlorine gas collection dome, copper or iron cathode, and iron screen separation. Explore the process of electrolysis and the products it yields.
