An aqueous solution of sodium sulfate is electrolyzed using platinum electrodes. If phenolphthalein [free-nawf-THAY-leen] indicator is added to the solution, which of the following will be observed?

W) The solution is colorless everywhere except at the cathode, where it is pink

X) The solution is colorless everywhere except at the anode, where it is pink

Y) The solution is pink everywhere except at the cathode, where it is colorless

Z) The solution is pink everywhere except at the anode, where it is colorless
W) THE SOLUTION IS COLORLESS EVERYWHERE EXCEPT THE CATHODE, WHERE IT IS PINK