Diffusion of Liquid: Explaining the Physics

In summary, diffusion is a chemical process where molecules move from an area of high concentration to an area of low concentration. This can be seen in the example of ink spreading in water. From a molecular physics standpoint, this occurs through collisions between molecules. The warmer the water, the faster diffusion occurs due to faster molecular movement and more frequent collisions. Additionally, pressure can also affect diffusion, although further research is recommended before seeking clarification.
  • #1
Oomph!
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Hello.
I know what is diffusion... chemical process when molecules from a material move from an area of high concentration to an area of low concentration... Typical example is ink in water. However, how it works? Molecules of water collide with molecules of ink? How it is happens from the viewpoint of molecular physics? ... If i take the ink to the warmer watter, diffusion will be faster. Can me tell why? Molecules are faster, so collisions are more frequent or why?
I heard that the pressure affects diffusion also. Why?

Thank you very much.
 
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  • #2
Have you searched the web? There are many sites that explain diffusion. Physics Forums prefers that posters make an attempt to research and understand a topic on their own before coming here. If you encounter points of confusion in your researches, come back and we'll be happy to help.
 

Related to Diffusion of Liquid: Explaining the Physics

1. What is diffusion of liquid?

Diffusion of liquid is the process by which molecules of a liquid move from an area of high concentration to an area of low concentration. This movement is driven by random molecular motion and does not require any external force.

2. What factors affect the rate of diffusion?

The rate of diffusion is affected by factors such as the concentration gradient, temperature, and the size and shape of the molecules. A steeper concentration gradient and higher temperature usually result in a faster diffusion rate, while larger molecules tend to diffuse more slowly.

3. How is diffusion different from osmosis?

Diffusion refers to the movement of molecules from an area of high concentration to an area of low concentration, while osmosis specifically refers to the movement of water molecules across a semi-permeable membrane.

4. How does diffusion contribute to the process of evaporation?

During evaporation, liquid molecules at the surface of a liquid gain enough energy to break free from the liquid and enter the gas phase. This process is driven by diffusion, as the liquid molecules move from an area of high concentration (the liquid) to an area of low concentration (the gas).

5. Can diffusion occur in all types of liquids?

Yes, diffusion can occur in all types of liquids, including both polar and non-polar liquids. However, the rate of diffusion may vary depending on the properties of the liquid and the surrounding environment.

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