Potassium metal is a better reducing agent that sodium but still potassium metal can be obtained by reduction of potassium chloride with sodium . How does it happen ?

Potassium metal is a better reducing agent that sodium but still potas

1.	Potassium metal is a better reducing agent that sodium but still potassium metal can be obtained by reduction of potassium chloride with sodium . How does it happen ?
Answer» Solution :Potassium can be OBTAINED by reduction of KCl and Na vapours at 1125 K in a large fractionating column . `KCl +Na overset(1125K)(to) NaCl + K` This reduction occurs because the lattice energy of NaCl is higher `(-770 kJ mol^(-1))`than that of KCl `(-703 kJ mol^(-1)`) .