How do I do titration calculations to get acid concentration?
1 Answer
Jan 18, 2018
Well, it depends on what acid you're talking about... If it's a diprotic acid, then
Let's pretend we are looking at a monoprotic acid, and titrating with
- From the burette readings, calculate the volume dispensed of the
#"NaOH"(aq)# from the burette. - Use the given concentration of
#"NaOH"# to get the mols of#"NaOH"# contained in that volume. - That reacts with the acid in the Erlenmeyer flask. We're using a monoprotic acid by assumption, so
#"1 mol NaOH"# #=# #"1 mol acid"# . - The volume of acid that was ORIGINALLY transferred into the Erlenmeyer flask then gives the concentration, i.e.
#"conc." = "mols"/"L acid solution"# . If you added extra DI water to the Erlenmeyer flask, ignore it.
Presumably, you made the acid solution yourself by putting acid solid into some water in a volumetric flask. Anyways, this process should be outlined in more detail in the lab background you should have read.
