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.