The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

Ester Percentage Yield-Help?

I have to prepare ethyl butanoate from ethanol and butanoic acid.

What would i need to calculate the yield and how would i do it?

Thanks a lot :smile:
Reply 1
Avatar for FiniteMr
FiniteMr
13
% Yield = ( actual absolute yield ) / ( theoretical absolute yield )
Original post by Hypocrism
% Yield = ( actual absolute yield ) / ( theoretical absolute yield )


Yeah, I know, I'm just not sure how to find the theoretical and actual values :colondollar: Mental block or something :tongue:
Reply 3
Avatar for FiniteMr
FiniteMr
13
Original post by why-hello-there
Yeah, I know, I'm just not sure how to find the theoretical and actual values :colondollar: Mental block or something :tongue:


Ok- the actual value is the value that you record at the end of your experiment. It could be a volume, converted to Nm. The ester should _really_ be separated with a centrifuge or fractional distillation (I can't think of any easier ways off the top of my head), but if I were doing the practical I wouldn't do that either :wink:

The theoretical volume is what you calculate from the volumes of reactants you use. You're reacting 1 mole of carboxylic acid with 1 mole of alcohol per mole of reaction going ahead, so take the limiting reagent (in this case, the reagent with the fewer amount of moles) and the same number of moles of the limiting reagent should be the theoretical yield.
Thanks a lot :biggrin:

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you