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/sci/ - Science & Math


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3246770 No.3246770 [Reply] [Original]

Who can explain chemical potential to me? I'm reading these biophysics texts, and they keep throwing the word around and I feel like I only have a vague grasp of what it actually is. Anyone care to describe it in layman's terms?

>> No.3246781

The chemical potential is a measure of how much energy is needed to add/remove a particle to/from a system.

>> No.3246791

>>3246781
in terms of bond strengths, pressure, temperature, concentration... or all of the above?

>> No.3246793

its pretty much a measure of the time necessary for the salty stuff underneath your balls to cause a hooker to vomit

>> No.3246797
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3246797

>>3246793

>> No.3246799

>>3246791
That depends on what system you're trying to describe statistically. Particles can be electrons in a crystal, photons in photon gas (black body), and probably even blood cells in the body.

>> No.3246802

some compounds store the energy that was used to create them inside their structure, when they break apart that energy is released.

>> No.3246814

>>3246799
so lets say i throw a single Cl- ion into a cup of water. Its going to interact with the system and change the total energy level... And this change in total energy is the chemical potential? what if I add an ensemble of molecules... is the kinetic energy that these particles impart to the solution also part of the chemical potential?

>> No.3246834

>>3246814
The chemical potential is a property of the system you're adding a particle to. I guess it should be independent of the new particle's other properties.
You can of course shoot a new molecule into your system, and that will add the kinetic energy to it, but that's going to be some other form of energy independent of the particle number of the system.

>> No.3246854

so the chemical potential of say, a brick wall, would be very high... because it would require a lot of energy to stick something inside of it?

>> No.3246860

>>3246854
So to speak, yes.

>> No.3246875

>>3246860
what about the chemical potential of yo mama?

>> No.3246876

>>3246875
A system of mo mama consists of one particle, which isn't really suitable for doing statistical physics or thermodynamics with it.

>> No.3246894

>>3246876
awww way to ruin a perfectly good joke! Anyways, thanks for the help.

>> No.3246898

>>3246894
Yeah sorry, the joke was really awesome. But I mean, thinking there's even a single German with humor, joke's on you.

>> No.3246906

>>3246898
What about Hitler? Talk about hilarious!

>> No.3246912
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3246912

>> No.3246925

>>3246912
aww cmon... Hitler was just kidding! It was all an elaborate prank he pulled as part of a fraternity initiation ritual

>> No.3246932
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3246932

>> No.3246945

>>3246932
are you offended by nazi jokes?