Question

The equivalent conductances at infinite dilution of $HCl$ and $NaCl$ are $426.15$ and $126.15mhoc{m}^{2}ge{q}^{-1}$ respectively. If can be said that the mobility of:

• A. $H^{+}$ ions is much more than that of $C{l}^{-}$ ions
• B. $C{l}^{-}$ ions is much more than that of $H^{+}$ ions
• C. $H^{+}$ ions is much more than that of $N{a}^{+}$ ions
• D. $N{a}^{+}$ ions is much more than that of $H^{+}$ ions

Answer 1

The correct option is C $H^{+}$ ions is much more than that of $N{a}^{+}$ ions

$\to$ The equivalent conductance of $HCl$ is more than $NaCl$ , it is because of difference in speed of ions.

$\to HCl$ has conductance at infinite dilution more than three times as high as that of $NaCl$.

$\to$ As Chlorine ion is common in both of them, it seems that speed of $H^{+}$ ion is much more than that of $N{a}^{+}$ ions.