In the beer-lambert law equation, what does the “b” represent? concentration absorption y-intercept buoyancy thickness of solution

In the Beer-Lambert Law equation, “b” represents.

Further explanation:

Spectrophotometry is a method that is applied for measurement of absorbance of light in terms of intensity of light when light is allowed to pass through the solution sample. Spectrophotometer is the equipment or instrument that is employed for this purpose.

Beer-Lambert’s Law:

This law describes the relationship of absorbance with concentration and path length of solution. According to this law, absorbance of any solution is directly related to its concentration and optical path length. The expression for Lambert-Beer’s law is as follows:

                                                                         …... (1)

Where,

A is absorbance of species.

 is molar absorptivity of species.

b is optical path length or thickness of solution.

c is concentration of species.

If graph is plotted between absorption and concentration of solution, a straight line or linear graph is observed. But this linearity is lost at extremely high concentrations. This non-linearity can be due to several factors. Some of these include use of non-monochromatic radiations, scattering of light, phosphorescence or fluorescence of sample.

According to equation (1),“b” represents the thickness of the solution.

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Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Beer-Lambert Law

Keywords: absorbance, Beer-lambert’s law, concentration, path length, solution, directly related, thickness of solution, molar absorptivity, A, b, c, spectrophotometry, spectrophotometer.

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