# Questions tagged [surface-chemistry]

Surface chemistry is roughly defined as the study of chemical reactions at interfaces between 2 or more phases.

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### Why is the rate of absorption constant? [closed]

In a comparison between absorption and adsorption, absorption was stated to take place at a constant rate, as opposed to adsorption, which slows down as the system reaches equilibrium. How does ...
12 views

### How lyophilic colloids reduce surface tension?

Its given in my textbook that surface tension of lyophilic/hydrophilic solution is lower than water. But my intuition says,since in lyophilic solution the interaction between a lyophilic colloid and ...
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### How thick is the colored oxide layer on heat treated stainless steel? [closed]

When stainless steel is welded, or just heat treated, it will develop a thicker oxide layer, which in some cases is is rainbow colored, but can become so thick as to appear almost black. From the ...
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### Viscosity at CMC

What happens to viscosity at critical micelle concentration? Does it increase or decrease abruptly, and if so, what's the reason behind it? I'm aware of changes in other properties such as ...
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### Relationship between surface energy of liquid and solid states

I have been experimenting with different kinds of hot-melt (hot glue) adhesives. I have been comparing EVA to acrylic on various substrates. In comparing the two I have found the acrylic to be ...
14 views

3k views

### How to remove stain from pavement after having dropped sulfuric acid on it?

I had this car battery that flipped in my car trunk. When I got it out of there it spilled some acid on the pavement. It's a sulfuric acid battery. I added some baking soda on it and poured some more ...
398 views

### How to reduce surface tension of oil?

I would like to create tiny colored drops slowly falling down in a transparent liquid. The diameter of the droplets must be around 2mm, and their speed must be approximately 0.5 mm / sec. For that, ...
160 views

### Can pi backdonation occur on non-metal centers?

The common example of back-donation is the interaction of a CO molecule with a metal center (d-orbitals) on a surface. Can a similar mechanism occur between CO and a non-metal center, like oxygen on ...
2k views

### What are molecular species?

I am in high school learning about adsorption for the first time. My school textbook says: "The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is ...
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### Nanocar racing competition and the race tracks used

In the Nanocar race competition the molecules are raced on a gold surface. Is there a specific property of gold that it forms a good "racetrack"? On what criteria does it compare with other metal ...
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### What decides the nature of emulsifying agents?

I read The emulsifying agent forms an interfacial film between suspended particles and the medium. The principal emulsifying agents for O/W emulsions are proteins, gums, natural and ...