for the lab of
SPECTROPHOTOMETRIC DETERMINATION OF IRON USING 1,10PHENANTHROLINE
%Fe= c unknown(mol/L) X 1L X 80 X Molarmass Fe(g/mol)Â Â X100%
                                         Mass of Sample (g)
I am confused about how to find the concentration of theunknown
In this method equal volumes of the unknown are pipetted intoseveral volumetric flasks. Then increasing volumes of the standardare added to each flask and each is diluted to the same finalvolume. Every flask now contains the same concentration of unknownand different concentrations of standard. (Remember that thestandard is the same substance as the unknown). For each flask, ameasurement of analytical signal is then made. The equation of theline is y= mx + b, where the x-intercept (the concentration of theunknown) is calculated from the expression x=−b/m
** if you need more information let me know
