EXPERIMENT 34/ Excited State Properties of 2-Naphthol. Part I: Excited State Acidity Constant

Obtaining the spectroscopic energy difference

There are three methods listed on page 528 of the lab manual. The first is based on measurement of the absorption maxima of the free acid and conjugate base. This is the one we will use to measure the spectroscopic energy difference Dn (wavenumbers).

Procedure