Question

What is the general format of how to do titration problems involving finding the concentration of the original acid solution?

Answer 1

Well, a stoichiometrically balanced equation is an absolute necessity....

Explanation:

Write down the reaction you perform BEFORE doing the titration, even for simple 1:1 acid-base reactions....

i.e. `HCl(aq) + NaOH(aq) rarr NaCl(aq) + H_2O(l)`

Now this establishes the stoichiometry, the molar equivalence. And of course there are stoichiometries that do NOT have this equivalence....

`H_3PO_4(aq) + 2NaOH(aq) rarr Na_2HPO_4(aq)+2H_2O(l)`...else..

`H_2SO_4(aq) + 2NaOH(aq) rarr Na_2SO_4(aq) + 2H_2O(l)`

ANd we use the quotient....`"moles of stuff"/"volume of solution in which stuff is dissolved"="concentration"`.

And typically, we report `"concentration"` with units of `mol*L^-1`...