But in the professional...or rather university field, this statement is actually wrong.
Because in the high school realm, the discharge order of hydroxide ions in water comes before oxyanions, so oxyanions cannot discharge.
However, in reality, due to the existence of overpotential, a side reaction that generates H2S2O8 will occur, exceeding the standard electrode potential of 2.01V, forming an overpotential situation.
Therefore, the electrolysis of dilute sulfuric acid is actually somewhat different from that of water.
Returning to the original place.
With the input of electrical energy, the sodium chloride in cup A was quickly electrolyzed.
Hydrogen gas is generated at the cathode.
Chlorine gas is generated at the anode.
These generated gases escaped and were collected by a glass conduit into a container placed in the dark, out of sight.
Chlorine gas at the bottom, hydrogen gas at the top.
