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Write the cell reaction of a lead storage battery when it is discharged. How does the density of the electrolyte change when the battery is discharged ? |
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Answer» Solution :* The DISCHARGING reaction of lead storage CELL is as follows : `Pb_((S))+PbO_(2(S))+2H_(2)SO_(4(aq)) to 2PbSO_(4(S))+2H_(2)O_((l))` * Density of electrolyte get decreases when discharging is going on. Initially 38% `H_(2)SO_(4)` is taken as ELECTROLYTIC in BATTERY. `H_(2)SO_(4)` has more density than water. * In this reaction `H_(2)SO_(4)` is utilized and water is formed. so the density of electrolyte decreases. |
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