Explain the construction and working of Lead acid storage cell with the help of diagram.
Construction
i)A group of lead plates packed with spongy lead serves as anode (negative electrode). ii) Another group of lead plates bearing lead dioxide serve as cathode (positive electrode).The two types of plates are alternately arranged in acid proof container. iii) The electrodes are immersed in an aqueous solution of 38% ( by mass) of H2SO4 of density about 1.2 g/ml which serve as electrolyte.