Chemical rxns in a typical automoblie lead-acid battery.

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SUMMARY

A typical automobile engine utilizes a lead-acid battery, which undergoes specific chemical reactions during discharge. The primary reaction involves the conversion of lead (Pb) and lead dioxide (PbO2) in the presence of sulfuric acid (H2SO4) and water (H2O2) to produce lead sulfate (PbSO4) with a heat release of -775 KJ. Additionally, sulfur trioxide (SO3) reacts with water to form sulfuric acid, releasing -133 KJ of heat. These reactions are crucial for understanding the energy dynamics within lead-acid batteries.

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A typical automoblie engine uses a lead-acid battery. During discharge, the following chemical reaction takes place.
Pb (s) +PbO2 (s) +2H2SO4 (aq) +2H2O2 (l)
(1) Pb (s) +PbO2 (s) +2SO3 (g) ---> 2PbSO4 (s) H= -775KJ
(2) SO3 (g) + H2O2 (l) ---> H2SO4 (aq) H= -133KJ
 
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1. What is the question?
2. Please edit the post so that every closing "sub" tag looks like [/sub].

Example: O2 --->O [s u b]2[/ s u b] without spaces
 
jalen said:
A typical automoblie engine uses a lead-acid battery. During discharge, the following chemical reaction takes place.
Pb (s) +PbO2 (s) +2H2SO4 (aq) +2H2O2 (l)
(1) Pb (s) +PbO2 (s) +2SO3 (g) ---> 2PbSO4 (s) H= -775KJ
(2) SO3 (g) + H2O2 (l) ---> H2SO4 (aq) H= -133KJ

Here it is Gokul... Is there a question lurking in there?
 

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