1equivalnece point is not in syll as far as i know... but still......
The equivalence point, or stoichiometric point, corresponds to the mixing together of stoichio-metrically equivalent amounts of acid and base. Note that the pH at equivalence is not necessarily 7.
1>>The pH of a weak base at the end-point (equivalence) lies below pH 7.
At equivalence, the solution contains the salt of a weak base: this is an acid (the conjugate acid of the weak base) and so the solution is acidic.
2>>The pH of a weak acid at the end-point (equivalence) lies above pH 7.
At equivalence, the solution contains the salt of a weak acid: this is a base (the conjugate base of the weak acid) and so the solution is basic.
[ofcrs copied from a reliable source ;) ]
