Spectrophotometry and Beer-Lamberts Law

[joeyjo100]

Homework Statement

A molecule has a spectral line at 27319 cm^-1

what is its wavelength?
what is its frequency?

Homework Equations

A=εCl
where A=absorbance, ε=molar extinction coefficient, C=concentration and l=path length

The Attempt at a Solution

thought about doing 1 over the spectral line for the wavelength, and correcting the units, but then realized frequency is 1 over the wavelength, which would just be the original answer

If I'm honest, i am not sure what it means by a spectral line, think the question may be badly worded

 

[Ygggdrasil]

Frequency is not 1/wavelength. It's easy to see that this equation is not true by looking at the units. Frequency has units of inverse time (e.g. s^-1). Wavelength has units of distance (e.g. m). 1/wavelenght does not give units of inverse time.

Frequency is (speed of the wave)/wavelength. You can check the units to see that dividing a speed by a distance give units of inverse time.