All Questions
Tagged with absorption physical-chemistry
14
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2
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Difference in the absorption spectrum of gaseous atoms and complex ions
An absorbance spectrum is a graph that shows how much light is absorbed by the material at each wavelength of light. Both spectra are due to electronic transition, but for gaseous atoms, this spectrum ...
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Normalized absorbance/transmittance definition [closed]
In the absorption spectroscopy we can calculate transmittance $T$ of a given sample by comparing how the intensity of the incident beam $I_{0}$ is decreased with the distance (Lambert-Beer Law).
$A = -...
user76255
-1
votes
1
answer
82
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How rate of absorption remains same throughout the process?
While reading surface chemistry, I got
Rate of adsorption is high at begining and then decreases till equilibrium is attained . On the other hand , rate of absorption remains same throughout the ...
user106386
7
votes
1
answer
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Can physical absorption happen despite the formation of products?
As far as I know, the absorption of $\text{SO}_2$ in water goes under physical absorption, meaning the sulfur dioxide bubbles are held in place by Van der Waals forces, in this case Keesom forces, ...
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2
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Why is the IUPAC definition of adsorption so different from other definitions?
NB: This question has been edited. Originally, some of the confusion was caused by me not knowing that condensed phase could refer to solid phases as well. This has been removed, but the confusion ...
- 301
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Why is there a mirror image effect in the absorbance and fluorescence spectra?
I've read some answers online but I still can't seem to understand the mirror image effect. Why is the highest energy absorption (v" = 0 to v' = 4) the lowest energy fluorescence (v' = 4 to v&...
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Maximum Value of Monolayer Capacity
What is the possible maximum value of the monolayer capacity? Is it possible for the monolayer capacity to exceed more than $(100)\frac{mol}{g}$ or even $(1000)\frac{mol}{g}$? Any help is highly ...
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273
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What is the effect of applied magnetic field on absorption spectrum?
Upon application of a weak magnetic field, a line in the microwave absorption spectrum of rigid rotor splits into $3$ lines. The quantum number $(J)$ of the rotational energy level from which the ...
- 120
2
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1
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Effective attenuation coefficient for polychromatic light
The Beer-Lambert law gives the optical intensity of collimated light as a function of depth $z$ as:
$$I(z)=I_{0}\mathrm e^{-\gamma z},$$
where $\gamma = \alpha + \beta$ is the wavelength-dependent ...
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1
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What is the relationship between emission and fluorescence?
A molecule exposed to a photon with some energy is put into an excited state, and emits a photon of some energy when it returns to ground state.
The photon that provided the energy for excitation ...
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What does activated carbon do to gasoline vapor?
What does activated carbon do to gasoline vapor? After the vapor is absorbed into a charcoal EVAP canister, what is left to be sent to the engine?
My question is in reference to the work of Tom Ogle ...
3
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1
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Is UV-Vis absorption polarization dependent ? Why?
Consider molecule of interest be dissolved in a solvent (and this molecule has absorption in the visible region). We are using a broadband visible light source say tungsten lamp. This light passed ...
- 1,582
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Sulfur atomic absorption
Would the atomic absorption from FAA for Sulfur be from 3s2 -> 3p4 or 3p4 -> 4s0?
I think according to the electronic partition function, there would be zero electrons in the 4s0 state at the ...
- 441
1
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0
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Removing harmful gases from automobile exhaust using electrostatic precipitation
If I attach an electrostatic precipitator to a car's exhaust - and also make the smoke pass through an area containing $\ce{NaOH}$ in order to absorb sulfur dioxide - does that mean that the smoke ...
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