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2 years ago

Determine the concern traction in [M] of a solution that has an absorbance of 0.420

Chemistry

1 answer:

ZanzabumX [31]2 years ago

8 0

The Concenteration of a solution that has an absorbance of 0.420

is 5.27 μМ

<h3> </h3><h3>What is Absorbance ?</h3>

Absorbance (A), also known as optical density (OD), is the quantity of light absorbed by a solution.

Transmittance is the quantity of light that passes through a solution.

We can measures the absorbance of a sample using a spectrophotometer and the value is A = 0.420.

We can calculate the concentration of the sample using the Beer-Lambert law, which relates the attenuation of light to the properties of the material through which the light is travelling, through the following equation.

A = ∈ x c x d

Where ;

A = Absorbance
∈ = molar absorptivity of the species (7.96 × 10⁴ M⁻¹ cm⁻¹)
c = concentration
d = optical path length (1.00 cm)

Therefore,

c = A / ∈ x d

= 0.420 / 7.96 × 10⁴ M⁻¹ cm⁻¹ x 1.00 cm

= 5.27 μМ

Learn more about spectrophotometer here ; brainly.com/question/20956841

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