I'm doing a redox potential/lead acid cell experiment and one of the questions that were asked was:

-What were the identities of the gases you saw being produced at the + and - electrodes during the cell conditioning process?
We used H2SO4

How do I go about answering this, I don't know what gases were produced, other than I knew something was produced. I can't find the answer in my textbook or lab manual. Help me!

1 answer

The lead/acid cell is
PbO2 + H2SO4 ==> PbSO4 + 2H2O
I assume you mean by conditioning that you are charging the cell from scratch. So the water is electrolyzed and you would expect H2 gas to be formed at the - electrode and O2 gas to be formed at the + electrode.
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