Construct a standard curve (absorbance vs. concentration) using the following results.

Question

A 5mL, 10mL, 15mL,20mL aliquot of 0.010M sodium salicylate solution was diluted to 100 mL in four different volumetric flasks with the Iron (III) chloride solution. The % Transmittance for the iron complex formed in each of these given solutios was 60.3%, 39.8%, 26.3%, and 15.1% respectively.