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Dr M Kanagasabapathy
Asst. Professor in Chemistry
Rajus college, Affiliated to M K University
Rajapalayam (TN) India
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Lead acid battery contains the following
1. Lead PB
2. Lead oxide PbO
3. Sulfuric acid H2SO4
During discharging Pb Oxidizes to Pb 2+ and PbO2 reduces to Pb2+ from Pb 4+
PbO2 + Pb + H2SO4 = 2 PbSO4 + H2O (~ 2.0 V per cell)
During charging the reverse reaction takes place
Pb2+ reduces to lead at cathode and another molecule of Pb2+ oxidizes to PB4+ or PbO2 by reacting with distilled water.
2 Pb(2+) + H2O2 = Pb + PbO2 (> 2.0 V per cell)
The important thing is the voltage for recharging should be slightly higher than the discharging voltage.
During discharging the battery functions as electrochemical cell.
And during charging it becomes an electrolytic cell.
By,
Dr M Kanagasabapathy
Asst. Professor in Chemistry
Rajus college, Affiliated to M K University
Rajapalayam (TN) India
Wiki User
∙ 12y ago
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∙ 11y agosulfuric acid
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Is recharging a car battery endothermic or exothermic?
It's exothermic because it produces and releases excess heat.
What does electrolyte do inside a battery?
It depends on the type of battery. In many batteries the electrolyte is not consumed in the process. It provides ions to one side of the reaction, and these ions are replaced in the other side maintaining the reaction. However in other reactions (such as the lead-acid battery in a car) the electrolyte (sulphuric acid) is consumed in the reaction (that is it combines with the electrodes depositing there, a reaction that is reversed with recharging), leaving an electrolyte that is mostly water.
What kind of battery is a car battery?
Lead acid, wet cell.
What element is used in batteries?
That depends on the type of battery. There are nickel cadmium, lithium, lead acid,
What substance is reduced in a lead-acid storage battery?
lead oxide
For maximum battery life should you wait for a lead acid battery to be depleted before recharging ie electric bike?
No. Lead Acid batteries should be kept at full charge for best battery life. Constant partial charging is best.
Why does your battery light stay on?
The alternator may not be recharging the battery .
When should you recharge Lead-acid deep cycle batteries?
When the battery looses it charge. It is designed to be run completely down before recharging.
Why does battery die when your truck is running?
Your alternator is not recharging the battery and is defective.
Does letting the battery go dead ruin the battery at all?
Yes... unless it is a high quality gel battery (and then, yes). The lead from the plates drops off. Without seed lead on the plates, recharging the battery does not reform the lead on the plates. Thus, every time one of the many plates in the battery is barren of lead, the battery will not fully charge that plate. If it happens frequently enough, all the plates will not accrue lead and thus will not hold a charge.
What is battery resurrection?
Recharging and bringing back to life.
Can lead acid battery work as alkaline battery?
Perhaps it would be possible to replace an alkaline battery with a lead acid battery of the same voltage and current capacity. BUT the construction, size, and chemistry of the two types are totally different.
What is a good voltage reading for a 12 volt battery?
For lead-acid chemistry, as in a car battery, think 13.6 volts DC.
Can you deplete the battery in an iPhone 4S?
Yes by not recharging the handset until it drains the battery.
What belt run the battery on a Ford Explorer?
The belt turning the alternator which is recharging the battery.
What is a recharged?
A battery that can be refilled with the energy it has. If it is in a phone, when you charge your phone, you are recharging the battery in your phone.
How long can a battery can last without recharging?
The answer will depend on the battery, and the amount of power it is required to deliver.
