List of top Chemistry Questions on Electrochemistry asked in UP Board XII

The value of standard electrode potential of Daniell cell is 1.1 V. Calculate the value of standard Gibbs energy for the following reaction. \[ \text{Zn (s) + Cu}^{2+}\text{(aq)} \longrightarrow \text{Zn}^{2+}\text{(aq)} + \text{Cu (s)} \]

The resistance of a conductivity cell, filled with 0.1 mol L\(^{-1}\) KCl solution is 100 \(\Omega\). If the resistance of this cell is 500 \(\Omega\) on filling 0.02 mol L\(^{-1}\) KCl solution, then calculate the conductivity and molar conductivity of 0.02 mol L\(^{-1}\) KCl solution. The conductivity of 0.1 mol L\(^{-1}\) KCl solution is 1.29 S m\(^{-1}\).

Give answers: (i) Why does the conductivity of any solution decrease with dilution?
(ii) Conductivity of 0.20 M KCl solution at 298 K is 0.248 S cm\(^{-1}\). What will be its molar conductivity?

What is Kohlrausch law? Write its applications.