Question

Define the following terms :

(i) Fuel cell

(ii) Limiting molar conductivity $\left({\wedge }_m^0\right)$

Answer 1

(i) It is a device which converts energy produced during combustion of fuels like hydrogen, methane, methanol etc. directly into electrical energy.

e.g., Hydrogen - oxygen fuel cell.

(ii) The molar conductivity of a solution at infinite dilution is called limiting molar conductivity and is represented by symbol ${\wedge }_m^0$.