Q. 484.0( 1 Vote )

Write the cell re

Answer :

The cell reaction of lead storage battery when it is discharged is give below:

At anode: Pb(s) + SO42–(aq) PbSO4 (s) + 2e

At cathode: PbO2(s)+ SO42–(aq)+4H+(aq) +2ePbSO4(s)+2H2O (l)

Overall reaction:

Pb(s)+PbO2(s)+2H2SO4(aq) 2PbSO4(s) + 2H2O(l)

The density is high when the concentration of H2SO4 is high, but during discharge this sulphuric acid gets consumed and becomes diluted with water. So, density decreases as the product water form dilute the H2SO4 concentration during the discharge of the battery.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses

<span lang="EN-USChemistry - Board Papers

Assertion : MercuChemistry - Exemplar

Note : In the folChemistry - Exemplar

What advantage doChemistry - Exemplar

E° cell forChemistry - Board Papers