In the titration of the weak acid ( HA ) by a strong base, such as NaOH what is meant by the equivalence point?

At the equivalence point the entire base / acid becomes its conjugate (acid / base) pair.

A titration of a weak acid with a strong base generates basic hydrolysis.

Explanation:

The equivalence point always depends on the [C] of salt formed. In the equivalence point the following equality is generated:

N . acid volume = N . base volume

Depending on where the pH of the equivalence point is located, the type of hydrolysis is defined. The equivalence point pH meets the following condition

N  . mEQ acid = N . mEQ base

Where the mEQ means mili equivalent

When the pH is modified in a considered way when adding titrant, we are in what is called the virage interval