1.

A lead storage cell is discharged which causes the H_(2)SO_(4) electrolyte to change from a concentration of 34.6% by weight (density 1.261 gmL^(-1) at 25^(@)C) to one of 27% by weight. The original volume of electrolyte is one litre. How many faraday have left the anode of battry ? Note the water is produced by the cell reaction as H_(2)SO_(4) is used up. Over all reaction is : Pb_(s) + PbO_(2) + 2H_(2)SO_(4(l)) rarr 2PbSO_(4(s)) + 2H_(2)O

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ANSWER :`1.255` FARADAY


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