Question

Part C The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the instrument returned an error because the absorbance was too high. The sample was then diluted by using a pipette to take 100.0 μL of the sample and injecting it into a cuvette already containing 2.00 mL of water (total volume is 2.00 mL + 100.0 μL). The absorbance value of the diluted solution corresponded to a concentration of 6.70×10−6 M . What was the concentration of the original solution? Express the concentration to three significant figures with the appropriate units.

Answer 1

on tenkYarion O У,: Volume Taken fom.the initial Soluhon. C inal Contentralian othe Solution ½ Anal volume ot the Colution Here (2.00 X10 X 100.6 ,UL - 2106 100. AL oviginal Conkenhal-ionetis X.