a simulated water sample is determined to have an absorbance of .169 at 550.8 nm. determine the concentration of Fe(III) ions in the sample

Question

anonymous · Answer

What is the equation of the absorbance/concentration line?

anonymous · Answer

Can't do much without that

anonymous · Answer

ummm y= .0068x-.2562
i think i plotted it and got that equation

anonymous · Answer

Ok, then it would be$$0.169=0.0068x-0.2562$$$$0.4252=0.0068x$$$$x=62.53\text{M}$$ Is this something you did for an experiment? if so you might want to double check your plot, that is EXTRAORDINARILY concentrated for a Fe(III) sample. It is unlikely that any modern spectrometer would give you a absorbance of less than one for that concentration

anonymous · Answer

well its just a pre-lab question. all of these are measured in PPM. y being absorbances at 550.8 and x being concentration in ppm

anonymous · Answer

alrighty then, if its in ppm that's a bit more reasonable

anonymous · Answer

haha alright tyvm