Question

Compare the titration curves for a weak acid and a strong acid. What are the differences?

Answer 1

weak acid;

has a buffer zone, i.e., the pH changes slowly with volume addition of titrant, since the equilibrium helps to "buffer" the reaction and changes of pH

for a storng acid:

thisdoes not exist, therefore, the addition of V changes th epH stronger

the half equivalence point of a weak acid titration will show the pKa vlaue of the acid according to Henderson Hasselbach equations

For a strong acid, we are always sure that in the equivalence point the pH is always = 7 or neutral

for a weak acid, we are always sure that pH in equivalence point is always greater that 7 due to the interaction of the conjugate base and water