Question

Define the following terms :
(i) Molar conductivity (^m)
(ii) Secondary batteries
(iii) Fuel cell

Answer 1

Dear Student,

(i) Molar conductivity : It is defined as the conducting power of all the ions produced by dissolving one mole of an electrolyte in solution.

(ii) Secondary batteries : In the secondary cells, the reactions can be reversed by an external electric energy source. Therefore these cells can be recharged by passing electric current and used again and again. These are also called storage cells. Eg. lead storage battery, nickel-cadmium battery.

(iii) Fuel cell: These are voltaic cells in which the reactants are continuously supplied to the electrodes. These are designed to convert the energy from the combustion of fuels such as H₂,CO,CH₄ etc, directly into electrical energy.EG. hydrogen-oxygen fuel cell.