Answer to Question #106213 in Physical Chemistry for Roopali Jha

Question

While using a UV-Vis spectroscopy for concentration of the analyte of 0.11 and 0.21 mM, the absorbance read are 2 and 3 units receptively. What is the concentration if the absorbance read is 2.6 units?

Answer 1

1 unit represents 0.1 mM (0.21-0.11=0.10) according to the graph.

Dividing it by 10 gives us a step of 0.01 mM.

So 2.6 units would represent 0.17 mM.