Question

The complex [FeSCN]2+ has an absorptivity of 6.14×10−2 L/(mg⋅cm) at a wavelength of 580 nm. The transmittance of a solution sample was measured in a 1.00 cm cell, and the percent transmittance %? was 35.9%. Calculate the concentration of the solution in ppm.

concentration of the solution: ? ppm

Answer 1

ppm = mg/L

Absorbance = €lc

Where, €= absorptivity

l = length of cell

c= concentration

A = -logT