Question

When $HN{O}_3\left(aq\right)$ is titrated with NaOH (aq) conductometrically, the graphical representation of this titration can be shown as

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

When a strong acid is titrated with strong base, it will get neutralised to salts.

$HN{O}_3$ Vs $NaOH$
Pure $HN{O}_3$ has high conductance due to the highly conducting $H^{+}$ ions.
Once $NaOH$ is added to $HN{O}_3$, $H^{+}$ (faster moving) are replaced with $N{a}^{+}$ (slow moving) ions. Thus, decreasing the overall conductance till the equivalence point.
After the neutralisation, further addition of $NaOH$ will increase the $O{H}^{-}$ ion concentration which increase the conductivity of the solution.
Thus, graph (d) represent the conductometric titration graph for $HN{O}_3$ Vs $NaOH$