Question

The concentration of a dilute aspirin solution is 0.000526 m. standard solutions of this compound were used to prepare a beer\'s law plot which gives a slope of 1550.3 m-1. what is the expected absorbance value for the aspirin solution?

Answer 1

Answer:

0.815.

Explanation:

• We should mention Beer's law:

A = ∈bC.

Where, A is the absorbance of the solution.

b is the cell length of the cuvette.

C is the concentration of the solution.

• The calibration curve is a relation between A and C has a slope of (∈b).

We have C = 0.000526 M and a slope of (∈b) = 1550.3 M⁻¹.

∴ A = ∈bC = (1550.3 M⁻¹)(0.000526 M) = 0.815.

Answer 2

The expected absorbance value for the aspirin solution is 0.815

Beer Lambert's law

From the question, we are to determine the expected absorbance value for the aspirin solution

From the Beer Lambert's law formula, we have that

A = εbc

Where A is the absorbance

ε is molar absorptivity

b is the path length

and c is the concentration

The Beer's law equation conform to the equation of a straight line, where εb is the slope of the line

Then, we can rewrite the equation as

A = mc

Where m is the slope

Now, from the given information

c = 0.000526 M

and m = 1550.3 M⁻¹

Putting the parameters into the formula, we get

A = 1550.3 × 0.000526

A = 0.8154578

A ≅ 0.815

Hence, the expected absorbance value for the aspirin solution is 0.815

Learn more on Beer Lambert's law here: https://brainly.com/question/12975133