Use [A-] and the pH at the equivalence point to estimate Ka of the weak acid (this is the hard way of estimating Ka)
Added by Delayne P.
Step 1
At the equivalence point in a titration of a weak acid with a strong base, the solution contains the conjugate base of the weak acid ([A-]) and water. The pH at this point can be used to estimate the acid dissociation constant (Ka) of the weak acid, though it's a Show more…
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