Web Form Submission for Results from NMR using NUTS workup to find Keq for Hacac in Various Deuterated Solvents                   
Experimental Chemistry I, Winter 2009

As soon as you have analyzed the integrations from the 400 MHz FTNMR and calculated a value for Keq in your assigned solvent, complete the following web form and submit your value for Keq.  We will then place all student results on a course web page so that you can get all the student data for 2009 to consider in the correlation analysis. 

Compare Keq values in different solvents for the keto-enol tautomerization for 2,4-pentandione (Hacac) from the class data.  You should base your comparison on the entire class results for 2009 and consider these results in light of the solvent properties (given on the web page, in class and in the lab manual)  You are certainly free to include other solvent properties in your analysis if you find that they are more helpful in rationalizing the behavior of Hacac.  A complete explanation of the correlation will be given in lecture. 

Your name:   

Section: TTh
WF

Your E-mail address:

Definition:  the equilibration is considered in the direction

Hacac.gif (2737 bytes)

Enter the name for your deuterated solvent:    

 

 

Report as many of the following ratios as you have (not everyone will have data for all ratios), but
everyone will have the methyl to methyl ratio at a minimum.
 		  

Based on [enol CH3] / [keto CH3] comparison, value for Keq to 3 significant figures  =   
 		  
Based on [enol CH3  / [keto CH2] comparison, value for Keq to 3 significant figures  = 
 		  
Based on [enol CH  / [keto CH2] comparison, value for Keq to 3 significant figures  = 
 		  
Based on [enol CH ]/ [keto CH3] comparison, value for Keq to 3 significant figures  = 
 		  
Based on [enol OH] / [keto CH3] comparision, value for Keq to 3 significant figures  = 

Thank you!

 

 

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Last updated: 02/20/09
Comments to C. Pastorek