Electrochemistry and cell electroplating

In summary, the conversation discusses the process of electroplating and specifically focuses on the reaction that occurs when a cell with a zinc cathode and an inert anode is turned on with a solution of copper ions. It is mentioned that the electrolysis of water is a reaction that balances itself, but it is clarified that in this case, there can be separate processes happening on the anode and cathode.
  • #1
dec123
2
0
Hello, I have a question in regards to electroplating. If i have a cell with let's say a zinc cathode and an inert anode in a solution of copper ions, and I turn on the current, what reaction will counter the reduction of copper ions to balance the electronegativity and what will be the potential of the cell?
 
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  • #2
Hint: if there is nothing else to react and potential is high enough, there is always solvent present.
 
  • #3
Borek said:
Hint: if there is nothing else to react and potential is high enough, there is always solvent present.
Ok, but the electrolysis of water is a reaction that balances itself, if there is already reduction of metal on the cathode, there can be only another oxidation which balances that reduction, is that not correct? If so, what is the exact reaction and what cathions are left in the water?
 
  • #4
Is this a homework question?
 
  • #5
dec123 said:
Ok, but the electrolysis of water is a reaction that balances itself

No, it is a sum of two separate processes, one occurring on the anode, the other on the cathode. They don't have to happen both at the same time.
 

1. What is electrochemistry?

Electrochemistry is the study of the chemical reactions that involve the transfer of electrons between substances, often through the use of an electrolytic cell.

2. How does electroplating work?

Electroplating is a process in which a metal coating is applied to an object through the use of an electrical current. The object to be plated is placed in an electrolyte solution and connected to a power source, while the metal to be plated is also placed in the solution and connected to the opposite pole of the power source. The electrical current causes the metal ions in the solution to be attracted to the object, forming a thin layer of metal on its surface.

3. What are some common applications of electroplating?

Electroplating is commonly used in industries such as automotive, aerospace, and electronics to improve the appearance, durability, and corrosion resistance of metal objects. It is also used in jewelry making and for decorative purposes.

4. What factors affect the outcome of electroplating?

The outcome of electroplating can be affected by various factors such as the type and concentration of the electrolyte solution, the current and voltage used, the temperature of the solution, and the cleanliness and surface preparation of the object to be plated.

5. What are the environmental impacts of electroplating?

Electroplating can have negative environmental impacts if not properly managed. The electrolyte solutions and metal ions used in the process can be toxic and must be disposed of carefully. Additionally, the use of electricity in electroplating contributes to carbon emissions. However, there are also environmentally-friendly alternatives to traditional electroplating methods, such as using non-toxic electrolyte solutions and renewable energy sources.

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