Chemical rxns in a typical automoblie lead-acid battery.

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A typical automobile engine utilizes a lead-acid battery, which undergoes specific chemical reactions during discharge. The primary reaction involves lead (Pb) and lead dioxide (PbO2) reacting with sulfuric acid (H2SO4) to produce lead sulfate (PbSO4) and release energy. The overall process is exothermic, with significant energy changes indicated by the enthalpy values of -775 kJ and -133 kJ for the respective reactions. The discussion highlights the importance of understanding these chemical reactions for automotive battery functionality. Understanding these reactions is crucial for optimizing battery performance and longevity.
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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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