At the equivalence point of the Potentiometric titration,
1
\(\frac{dE}{dV} =\text{maximum}, \frac{d^2E}{dV^2} =0\)
2
\(\frac{dE}{dV} =0, \frac{d^2E}{dV^2} =0\)
3
\(\frac{dE}{dV} =\text{maximum},\ \frac{d^2E}{dV^2} =\text{maximum}\)
4
\(\frac{dE}{dV} =0, \frac{d^2E}{dV^2} =\text{maximum}\)