An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1

An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1 . The expected absorbance and %T values for the diluted aspirin solution prepared by the student is

Absorbance = slope*molarity will get A for you.

Then A = log (1/T) for transmittance. T*100 = %T.

how would we calculate for %T using logs?

How do you isolate T for this problem?

An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1 . The expected absorbance and %T values for the diluted aspirin solution prepared by the student is _______ and _________, respectively.

i still don't get it?....did anyone figure it out???

To find the concentration of the unknown solution, we can use Beer's Law equation, which relates the concentration of a solution to its absorbance. Beer's Law is expressed as:

A = εcl

Where:
A is the absorbance of the solution,
ε is the molar absorptivity (also known as the molar absorption coefficient) in M^(-1)cm^(-1),
c is the concentration of the solution in M,
l is the path length of the cuvette in cm.

In this case, we are given the slope of the Beer's Law plot, which represents the molar absorptivity (ε), and is equal to 1550.2 M^(-1). We are also given the concentration (c) and the absorbance (A) of the unknown solution.

We can rearrange Beer's Law equation to solve for the concentration:

c = A/(εl)

Substituting the given values:

c = 0.000630 M/(1550.2 M^(-1) * l)

Keep in mind that the path length (l) refers to the thickness of the cuvette used to measure the absorbance. Without the specific value for l, we cannot calculate the concentration accurately.