in gas chromatography, why do E1 and E2 give different peaks (areas) though it's the same compound??
For example, for 1-butene, the percent composition is low in E1 but very high in E2.
3 answers
so it is because acidic and basic conditions are used...but I'm still unsure how that gives different product ratios.
I think you need to explain more about what you have done/are doing.
dehydration of a secondary alcohol proceeds readily with the presence of strong acid and proceeds with E1 mechanisms. Removing product from chemical system at equilibrium shifts the equilibrium in the direction favoring the formation of the products.
I carried out a dehydration in reaction tube connected to a gas collector so that product will continously escape out of reaction mixture as it is formed. The collected gaseous product was anaylzed using gas chromatography which show peaks. With the relative area of peaks, we are able to calculate percentage composition of product mixture.
for the second part, I proceeded with the base-induced dehybromination reaction which goes through E2 mechanism.
1-butene was one of the compounds in the mixture and the peak was low (percent composition was low) but in E1, the peak (percent composition) was very high in E2.
So depending on the mechanism, it produces different amounts of the products and I am not sure how and why it does.
I carried out a dehydration in reaction tube connected to a gas collector so that product will continously escape out of reaction mixture as it is formed. The collected gaseous product was anaylzed using gas chromatography which show peaks. With the relative area of peaks, we are able to calculate percentage composition of product mixture.
for the second part, I proceeded with the base-induced dehybromination reaction which goes through E2 mechanism.
1-butene was one of the compounds in the mixture and the peak was low (percent composition was low) but in E1, the peak (percent composition) was very high in E2.
So depending on the mechanism, it produces different amounts of the products and I am not sure how and why it does.