Electrolysis System Work and Real Gas Law

In summary, the conversation is about calculating the system work for the electrolysis of water using Ideal Gas Law and Real Gas Law. The formula for calculating work using Ideal Gas Law is discussed, and a link to a thread on the topic is provided. The person then asks for help with calculating work using Real Gas Law, and links to an image and a website for reference. The expert responds by stating that work is still the integral of PdV and asks if there is anything in particular the person is struggling with. The person clarifies their question and provides two additional links for reference.
  • #1
HelloCthulhu
151
3
Greetings Everyone!

I read a very good thread regarding how Ideal Gas Law is used to calculate system work for the electrolysis of water:

W = PΔV = (101.3 x 103 Pa)(1.5 moles)(-22.4 x 10-3 m3/mol)(298K/273K) = -3715 J

https://www.physicsforums.com/threads/work-of-electrolysis-of-water.756240/

I'm trying to figure out how to calculate the system work using Real Gas Law:

http://pages.towson.edu/ladon/image/gaseq36.jpg

The image is from this link: http://pages.towson.edu/ladon/gases.html

Any help is greatly appreciated!
 
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  • #2
Work is still the integral of PdV. Anything in particular you're having trouble handling?
 
  • #3
Bystander said:
Work is still the integral of PdV. Anything in particular you're having trouble handling?

I'm not sure how to solve for energy.
 
  • #4
I apologize. I meant I'm not sure how to incorporate real gas law into solving for system work during water electrolysis. I think I may be closer to a solution though.

http://chemistry.illinoisstate.edu/standard/che360/homework/360ps3solns.pdf

https://www.csun.edu/~jeloranta/CHEM351/example2.pdf
 

1. What is an electrolysis system and how does it work?

An electrolysis system is a device that uses electricity to split water molecules into hydrogen and oxygen gas through a process called electrolysis. The system is made up of two electrodes (usually metal plates) placed in a solution of water and an electrolyte. When an electrical current is passed through the electrodes, the water molecules are broken down into their component gases.

2. What is the real gas law and how does it relate to electrolysis?

The real gas law, also known as the van der Waals equation, is a mathematical formula that describes the behavior of gases at high pressures and low temperatures. It takes into account the volume of gas molecules and the attractive forces between them. The real gas law is relevant to electrolysis because it helps to explain the behavior of gases produced during the process.

3. What are the applications of electrolysis systems?

Electrolysis systems have a wide range of applications, including hydrogen production for fuel cells, metal plating, and water treatment. They are also used in the production of chlorine and other chemicals, as well as in the production of pure metals.

4. What are the benefits of using an electrolysis system?

One of the main benefits of using an electrolysis system is that it allows for the production of pure gases, such as hydrogen and oxygen, without the need for chemical processes. This makes it a more environmentally friendly and cost-effective option for certain applications. Additionally, electrolysis can be powered by renewable energy sources, making it a sustainable method of gas production.

5. Are there any challenges or limitations to electrolysis systems?

One of the main challenges of electrolysis systems is the high energy input required to produce gases. This can make it less efficient and more expensive compared to other methods of gas production. Additionally, the electrolyte used in the system can be corrosive and requires proper handling. However, advancements in technology have helped to overcome some of these limitations and make electrolysis systems more efficient and practical.

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