[Pepealej]

Hi everyone. I'm new to this forum and wanted to start by asking for help with one question I have.

I've got a question on water electrolysis using sulfuric acid. In the process, will all the sulfuric acid be used up? What will happen with it? How do I know?

Thanks

[Pepealej]

Hi. I'm new to this forum and wanted to ask one question.

My question is regarding water electrolysis with Na₂SO₄. I've used thymol blue too. My question is: Why does the color change in the proximities of the electrodes during the electrolysis?

I suppose this is due to a change in pH, but I don't know how to explain it. Can anybody give me a hand?

Thanks

[Borek]

These questions are closely related, so it is better to have them in one thread.

What have you observed (apart from indicator color changes)? Write reaction equations explaining your observations.

[Pepealej]

I've observed the standard water electrolysis.

The H2SO4 dissociates and thanks to its ions the electrolysis can take place. The global reaction is: H₂O (l)  H₂ (g) + 1/2 O₂ (g).

Nothing else.

[Borek]

That's a correct overall reaction. Can you split it into the cathode and anode parts?