- #1

lee403

- 16

- 1

_{2}formation using UV Vis spectroscopy and I need to figure out the extinction coefficient/ absorptivity.

The overall reaction is

BrO

_{3}

^{-}+5Br

^{-}+6H

^{+}-->3Br

_{2}+3H

_{2}O

which is expcted to go to completion

I know that the equation relating absorbance to concentration is

A=εcl

and I have times series A measurements and can calculate the initial concentrations of BrO

_{3}, Br

^{-}and the expected concentration of Br

_{2}from the solutions I made. I just need to find ε.

I first attempted to plot the absorbance v. time and find the slope where it was most linear but I don't know how valid this approach is.