ESR Lab Activity

Introduction

We are going to collect an ESR spectrum from a series of substituted hydroquinones.

A=Hydroquinone (110.11 g/mol)

B=methylhydroquinone (124.14 g/mol)

C=2,3-dimethylhydroquinone (138.16 g/mol)

(enter a table here with information, molar mass, sigma product number, cost)

Solution A: 1 M NaOH; 1 gram NaOH (39.997 g/mol) into 25 mL EtOH.
Solution B: 1 M hydroquinone solution.
Procedure: To 2 ml of 1 M hydroquinone solution add 2-3 drops of solution A. A color change will indicate the reaction has occurred. Quickly transfer colored sample to ESR sample tube, place in ESR spectrometer, tune, and collected data.