Just writing upa prac on making an ester and was wondering if anyone could explain why we (add water then drain)x3 then add water, NaHCO3 then drain, I know the gist of it but I need clarification, I can't find out from the various textbooks I have >.<
-
Finished your HSC? Check out our University Discussion, Non-School forums or help out next year's HSC students! -
YOU can help the next generation of students in the community! Share your trial papers and notes on our Notes & Resources page
Reason for adding water in esterification? (1 Viewer)
- Thread starter SmileyCam
- Start date
physician
Some things never change.
because the acid and alcohol form polar bonds and are able to dissolve in water... leaving u with the ester....SmileyCam said:
NaHCO3 I'm not sure why it's added but obviously to get the ester on its own... but i'm not sure what it reacts with...
I'm just telling u what i know from the back of my head... sooo... yeh....
currysauce
Actuary in the making
the sodium hydrogen carbonate is added to remove any of the left over alkanoic acid that wasn't used in the ester formation.
u should then use a funnel to remove ester and water
u should then use a funnel to remove ester and water
bEAbEA
Member
The sulfuric acid was a catalyst and is also a dehydrating agent
The sodium hydrogen carbonate neutralises the excess acid on the solution
The calcium chloride is also a dehydrating agent to remove any left over water before distillation - to ensure a purer ester at the end.
The sodium hydrogen carbonate neutralises the excess acid on the solution
The calcium chloride is also a dehydrating agent to remove any left over water before distillation - to ensure a purer ester at the end.