Chemistry, asked by Ridip2283, 1 year ago

Cathode of lead storage battery is made up of

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Answered by Riyaa11

zinc and manganese dioxide

amarajothis: In the discharged state, the lead (Pb) of the anode, and lead dioxide (PbO2) of the cathode are completely converted to lead sulphate (PbSO4). The water produced in the reaction dilutes the sulphuric acid. ... A discharged lead storage cell however can be recharged by passing a direct current (dc) through the storage cell.

Answered by kobenhavn

Answer: $PbO_2$

Explanation: Lead storage battery is a secondary cell used in automobiles and invertors. The anode is made up of lead and undergoes oxidation during discharging and cathode is made up of lead oxide and acts as cathode during discharging. The electrolyte used is dilute $H_2SO_4$ .

The cell acts as electrochemical cell while discharging and electrolytic cell while charging.

Discharging:

Anode: $Pb+SO_4^{2-}\rightarrow PbSO_4(s)+2e^{-}$

Cathode: $PbO_2+SO_4^{2-}+4H^++2e^-\rightarrow PbSO_4+2H_2O$

The reactions get reversed while charging.

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