15 Questions
What is the origin of color in inorganic materials?
d-d transition
What type of solutions absorb some wavelengths and emit others?
Colored solutions
What type of materials have functional groups with unsaturated linkage that cause color?
Organic materials
According to the basic law of colorimetry, which portions of light can be neglected?
Reflected and scattered
What is the relation between the concentration of a solution and the intensity of incident light in colorimetry?
Direct relation
What is the main characteristic of dark solutions?
Absorbs light completely
What is the relationship between transmittance (T) and absorbance (A) of a solution?
A = -log T
What does the Beer-Lambert law tell us about the absorption of light by a solution?
The absorption is directly proportional to the concentration and path length
How does the concentration of absorbing molecules affect the absorbance of light according to Beer's law?
The absorbance increases with increasing concentration
What is the unit of molar absorptivity (Ԑ) for a substance?
L/mol/cm^2
What is a characteristic of molar absorptivity (Ԑ) at an absorption maximum for a species?
It varies with the wavelength of incident light
What is the effect of increasing path length on the absorbance of light in a solution?
The absorbance increases with increasing path length
How does the molar absorptivity (Ԑ) affect the sensitivity of a colormetric method?
As Ԑ increases, sensitivity increases
What does 'concentration' refer to in the context of absorption of light?
The amount of solute per unit volume of solution
What is the relationship between absorbance (A) and concentration (c) according to Beer's law?
$A = \varepsilon cL$
Test your knowledge of colorimetry theory in Analytical Chemistry II with this quiz. Explore the fundamental concepts and principles related to the relation between solution concentration and incident light intensity, and the comparison of color intensity between unknown and standard solutions.
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