In a conductometric titration, small volume of titrant of higher concentration is added stepwise to a larger volume of titrate of much lower concentration, and the conductance is measured after each addition.
The limiting ionic conductivity (Λ0) values (in mS m
2mol
−1 ) for different ions in aqueous solutions are given below:
Ions | Ag+ | K+ | Na+ | H+ | \(\text{NO}_{3}^{-}\) | Cl- | \(\text{SO}^{2-}_{4}\) | OH- | CH3COO- |
\(\Lambda_0\) | 6.2 | 7.4 | 5.0 | 35.0 | 7.2 | 7.6 | 16.0 | 19.9 | 4.1 |
For different combinations of titrates and titrants given in
List-I, the graphs of 'conductance' versus ‘volume of titrant’ are given in
List-II.Match each entry in
List-I with the appropriate entry in
List-II and choose the correct option.