A lead storage battery consists of a lead anode and a grid of lead packed with lead dioxide as the cathode. The electrolyte taken is 39% H_(2)SO_(4) by mass having a density of 1.294 g mL^(-1). The battery holds 3.5 L of the acid. During the discharge of the battery, the density H_(2)SO_(4) falls from 1.294 g mL^(-1) to 1.139 g mL^(-1) which is 20% H_(2)SO_(4) by mass Q. Molarity of the solution after the discharge is

A lead storage battery consists of a lead anode and a grid of lead pac

1.	A lead storage battery consists of a lead anode and a grid of lead packed with lead dioxide as the cathode. The electrolyte taken is 39% H_(2)SO_(4) by mass having a density of 1.294 g mL^(-1). The battery holds 3.5 L of the acid. During the discharge of the battery, the density H_(2)SO_(4) falls from 1.294 g mL^(-1) to 1.139 g mL^(-1) which is 20% H_(2)SO_(4) by mass Q. Molarity of the solution after the discharge is
Answer» 8.136 4.068 2.32 1.16 SOLUTION :Moles of `H_(2)SO_(4)` present in the solution after discharge`=(797.3)/(98)=8.136` `THEREFORE`Molarity of the solution`=(8.136" moles")/(3.5L)=2.32`