Finding the Average Epsilon and Molarity of Unknown Solution
Stock Solution: 8.8×10-5 M
Solution #1: 1.809×10-5 M
Solution #2: 1.046×10-5 M
You measure the absorbance of each solution (at λmax = 524 nm) and obtain the following results:
Determine the average epsilon for FD&C Red 40.
You are given an unknown solution of FD&C Red 40. You measure the absorbance and find it to be 0.570 at 524 nm.
Determine the concentration of the unknown solution in terms of molarity.