While a car is running, the alternator provides current to the battery and recharges it. Which reaction occurs at the anode of a lead-storage battery during this process?

A. PbSO4 + 2H2O --- 2e− + PbO2 + 4H+ + SO42−
B. Pb + SO42− --- PbSO4 + 2e−
C. 2e− + PbO2 + 4H+ + SO42− --- PbSO4 + 2H2O
D. PbSO4 + 2e− --- Pb + SO42−

Question

While a car is running, the alternator provides current to the battery and recharges it. Which reaction occurs at the anode of a lead-storage battery during this process?

 A.	PbSO4 + 2H2O ---> 2e− + PbO2 + 4H+ + SO42−
 B.	Pb + SO42− ---> PbSO4 + 2e−
 C.	2e− + PbO2 + 4H+ + SO42− ---> PbSO4 + 2H2O
 D.	PbSO4 + 2e− ---> Pb + SO42−

vera_ewing · Answer

@DanJS

danjs · Answer

During the charge operation, the “−” plate must now be called the cathode (since the plate material is now being reduced), while the “+” plate must now be called the anode (since the plate material is now being reduced).

danjs · Answer

So the anode reaction here, would be the same as the Cathode reaction from the question where they discharged the battery instead of charging it

vera_ewing · Answer

so the answer is A right?

danjs · Answer

PbO2 	+	3H +	+	HSO4−	+	2e −	 → 	PbSO4 	+	2H2O

danjs · Answer

During the discharge operation, acid is consumed and water is produced. During the charge operation, water is consumed and acid is produced.

vera_ewing · Answer

It was A....I was right *sigh*

danjs · Answer

yeah , it was the reverse of the thing i pasted, that is what i said

vera_ewing · Answer

i wish you could have just said, "yes, the answer is A" lol but thanks anyway