During the discharge of a lead storage battery, the density of sulphuric acid fell from 1.294 g/m to 1.139 g/m. Sulphuric acid of density 1.294 g/m was 39% H_2SO_4 by wt. while acid of density 1.139 g/ m contains 20% acid by wt. The battery holds 3.5 L of acid and the value remianed practically same through the discharge. Catculate the number of amp hr. for which the battery must have been used. The charging and discharging reactions are : PbO_2 +SO_4^(2-) + 4H^++ 2e^(-)toPbSO_4 + 2H_2O (discharging ) PbSO_4 (s) +2eto Pb (s) + SO_4^(2-)(charging )

During the discharge of a lead storage battery, the density of sulphur

1.	During the discharge of a lead storage battery, the density of sulphuric acid fell from 1.294 g/m to 1.139 g/m. Sulphuric acid of density 1.294 g/m was 39% H_2SO_4 by wt. while acid of density 1.139 g/ m contains 20% acid by wt. The battery holds 3.5 L of acid and the value remianed practically same through the discharge. Catculate the number of amp hr. for which the battery must have been used. The charging and discharging reactions are : PbO_2 +SO_4^(2-) + 4H^++ 2e^(-)toPbSO_4 + 2H_2O (discharging ) PbSO_4 (s) +2eto Pb (s) + SO_4^(2-)(charging )
Answer» ANSWER :[0.954 A HR]