The vertical axis on an IR spectrum represents the percent transmission and the horizontal axis measures frequency (wavenumber).

Question

Quizplus · Accepted Answer

The vertical axis of an IR spectrum indeed represents the percent transmission, indicating how much of the infrared light is transmitted through the sample, while the horizontal axis measures the frequency of the IR light, typically expressed in wavenumbers (inverse centimeters, cm^-1), which corresponds to the different vibrational modes of the molecules in the sample.

The Vertical Axis on an IR Spectrum Represents the Percent