Difference between revisions of "ESR Lab Activity"
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==Introduction== | ==Introduction== | ||
We are going to collect an ESR spectrum from a series of substituted hydroquinones. | We are going to collect an ESR spectrum from a series of substituted hydroquinones. | ||
| + | |||
==Experimental== | ==Experimental== | ||
| Line 6: | Line 7: | ||
*Solution A: 1 M NaOH; 1 gram NaOH (39.997 g/mol) into 25 mL EtOH. | *Solution A: 1 M NaOH; 1 gram NaOH (39.997 g/mol) into 25 mL EtOH. | ||
*Solution B: 1 M hydroquinone solution. | *Solution B: 1 M hydroquinone solution. | ||
| − | *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 sample to ESR sample tube, place in ESR spectrometer, tune, and collected data. | + | *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. |
===Flow Method=== | ===Flow Method=== | ||
| − | + | *Solution A: 0.05 M NaOH; 0.05 grams NaOH (39.997 g/mol) into 25 ml EtOH. | |
| − | + | *Solution B: 1 M hydroquinone solution. | |
| − | + | *Procedure: Prepare two syringed with | |
==Results== | ==Results== | ||
Revision as of 22:05, 20 April 2016
Introduction
We are going to collect an ESR spectrum from a series of substituted hydroquinones.
Experimental
Beaker Method
- 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.
Flow Method
- Solution A: 0.05 M NaOH; 0.05 grams NaOH (39.997 g/mol) into 25 ml EtOH.
- Solution B: 1 M hydroquinone solution.
- Procedure: Prepare two syringed with