I need to balanced this equation using the half reaction method.
Pb+PbO2+H2SO4---> PbSO4
I just need the 2 half reactions and i can do the rest myself,
is one of the half reactions:
Pb+PbO2-->PbSO4?
What is the other half reaction if this is correct?
thanks!!!! :)
2006-10-02 08:18:08 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
um.. i'm not sure .. its been more than a year since i bade farewell to chemistry!
um... are u sure about the first equatio.. i mean there's sumin bugging me about it.. shouldnt it be Pb2SO4 on the product end?!
and NO the reaction doesnt go that way...
i guess it'd be something like:
Pb+PbO2+2(H2SO4) ----> Pb2SO4
PbO2+2(H2) ----> Pb+2(H2O)
Pb+SO4(2-)---> Pb2SO4...
i know that it still is NOT error-free.. but its a general idea.. hope it helps you SOMEWHAT!
2006-10-02 08:30:02 · answer #1 · answered by Shariq M 5 · 0⤊ 7⤋
This is the chemistry of a lead-acid storage battery.
At the negative plate:
Pb + H2SO4 --> PbSO4 + H2
At the positive plate:
PbO2 + H2SO4 --> PbSO4 + H2O + O
or 2PbO2 + 2H2SO4 --> 2PbSO4 + 2H2O + O2
The balanced equation is usually written as:
Pb + PbO2 + 2H2SO4 --> 2PbSO4 + 2H2O
2006-10-02 15:28:26 · answer #2 · answered by Richard 7 · 8⤊ 0⤋