Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge regulation of colloidal particles in aqueous solutions   We study charge regulation of colloidal particles inside aqueous electrolyte
solutions. To stabilize colloidal suspension against precipitation, colloidal
particles are synthesized with either acidic or basic groups on their surface.
In contact with water these surface groups undergo proton transfer reaction,
resulting in colloidal surface charge. The charge is determined by the
condition of local chemical equilibrium between hydronium ions inside the
solution and at the colloidal surface. We use a model of Baxter sticky spheres
to explicitly calculate the equilibrium dissociation constants and to construct
a theory which is able to quantitatively predict the effective charge of
colloidal particles with either acidic or basic surface groups. The predictions
of the theory for the model are found to be in excellent agreement with the
results of Monte Carlo simulations. The theory is further extended to treat
colloidal particles with a mixture of both acidic and basic surface groups.

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The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
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The categories of this paper are: eess
27
The categories of this paper are: comp-gas
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The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an