is there a difference between halfway point and equivalence point in titration?

Question

where the [HA] = [A-], pka = pH this is true for the equivalence point, but is this also the halfway point?

Answer 1

"where the [HA] = [A-], pka = pH this is true for the equivalence point, but is this also the halfway point?"



[HA] = [A-] is true at the halfway point, not the equivalence point.



At the equivalence point, all the HA has been converted to A- by adding a stoichiometrically equivalent amount of base. Then, this reaction sets in:



A- + H2O <==> HA + OH-



Just to be clear, the half-equivalence point (what you called the halfway point) and the equivalence point are different things with different behaviors.

Answer 2

The point the place the indicator changes its color. Or else a change in an instrumental response may also be used to establish the end factor. The equivalence factor in a titration is the factor at which the added titrant is chemically identical fully to the analyte within the pattern.

Answer 3

1/2 way pH=pka



equivalence it is all salt...much more tedious



take a look



http://www.kentchemistry.com/links/AcidsBases/titrationWeakStrong.htm