Chapter 14.7, Problem 14P

Interpretation Introduction

Interpretation:

The concentration of a vitamin A sample with absorbance at 325 nm (A) = 0.735 in a cell with path length of 1.00 cm is to be calculated if its ε value is 50100.

Concept introduction:

The molar absorptivity, ε, is given by where A is absorbance, C is the concentration of the solution in moles/lit and l is the sample path length in cm.

To calculate:

The concentration of a vitamin A sample with absorbance at 325 nm (A) = 0.735 in a cell with path length of 1.00 cm if its ε value is 50100.