Question

When a lead storage battery is discharged

• A. SO2 is evolved
• B. Lead sulphate is consumed
• C. Lead is formed
• D. H2SO4 is consumed

Answer 1

Answer: (D)

H2SO4 is consumed

Answer 2

At anode : $Pb + H_{2}SO_{4}SO_{4} \rightarrow PbSO_{4} + 2H_{2}O$

At cathode:

$PbO_{2} + H_{2}SO_{4} + 2H^{+} + 2e^{-} \rightarrow PbSO_{4} + 2H_{2}O$

Net dishcharging equation

So, H2SO4 is consumed during discharging of lead storage battery