[382092656]

if 1.0M NaSO4 solution is be elctrolyzed in U tube containing carbon elctrodes. before electrolysis begins, bromthymol blue indicator solution is addeed to the solution, and the color is adjusted to green which in natural. How do I predict and color of the anode and cathode? I know how to find anode and cathode, but just don't get the color part, and if anyone know the answer, could you tell me why as well?

[Borek]

Write reaction equations for both electrodes.

[Arkcon]

And what does bromothymol blue indicator ... um, indicate?  That should give you a hint into what to look for.