Question

In identical conditions Cl- ions in 0.1 M HCl solution have lesser transport number in
composition to 0.1 M NaCl solution

Answer 1

• Mobility of $H^{+}$ is greater than that of $Na^{+}$ that's why lesser transport number of Chloride ion in 0.1M HCl solution.

Explanation:

As here we have Co-ion $H^{+}$ in 0.1M HCl solution and $Na^{+}$ in 0.1 M NaCl solution.

We know that the mobility of $H^{+}$ in 0.1M HCl solution is very high than the mobility of $Na^{+}$ in 0.1M NaCl solution hence the greater the mobility of co-ion lesser will be its transport number.