Question

a 111.4mg ore sample containing iro with acid , filtered and diluted to 200.0ml in volumetric flask. a 1000ml aliquot is transferred to a 100.ooml volumetric flask containing hrdroxylamine hydrochloride, sodium acetate and 1,10- phenanthroline and diluted to the mark . the resulting orange-red solution hadan absorbance of 0.486 at 508nm in a cm cell . if the molar absorptivity of the iron-phenanthroline complex at this wavelength is 1.86*10^3 l/molcm , determine the percentage of the iron in the ore sample?

Answer 1

You need to proof what you post. How do you transfer a 1000 mL aliquot OUT of a 200.0 mL volumetric flask INTO a 100.00 mL volumetric flask containing......? I would like to see this done.

Answer 2

By the way, you don't list the length of the cell.