(5 pts) Compare your GC, NMR and distillation results. Did they give the same in
ID: 552111 • Letter: #
Question
(5 pts) Compare your GC, NMR and distillation results. Did they give the same information or did they contradict each other? Which was better at identifying the unknown solvents? Which was better at determining % composition? If the data did contradict each other, explain where the discrepancy may have come from. (5 pts)
Identification of A: ___MTBE ___ Identification of B: __Toluene___
(1 pt)Composition of original mixture (From distillation graphs): %A___35%___ %B___65%__
(1 pt)Composition of original mixture (From GC):
%A____29%__ %B____70%___
(1 pt)Composition of original mixture (From NMR):
%A__31.8%___ %B____68.2%____
(1 pt)Composition of original mixture (From distillation graphs): %A___35%___ %B___65%__
(1 pt)Composition of original mixture (From GC):
%A____29%__ %B____70%___
(1 pt)Composition of original mixture (From NMR):
%A__31.8%___ %B____68.2%____
Explanation / Answer
All the technical analysis shows that in the solvent mixture ; % composition of A is less than that of B.
The percentage analysis of each component by the three techniques close values to each other. Hence they do not contradict.
The best way to detect the percentage analysis is GC as the instrumental error and manual error is least fir this method.
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