An aluminum bar and an iron bar are inserted into the water to conduct electricity. Why does it float?
The cathodic reaction of hydrogen ions leads to the formation of hydrogen and the alkaline enhancement of hydrogen cathodesTherefore, a large number of white floc near the cathode, immediately after the shock into gray green, exposure to air, long reddish brownWhen the aluminum rod is used as the anode of the power supply, the negative pole of the iron rod is connected with the cathode of the power supply as the cathodeBecause aluminum is a living metal, aluminum will lose electrons as an anode
It depends on what rods and electrodesWhen the iron rod is connected with the positive electrode of the power supply as an anode, the negative electrode connected with the power supply of the aluminum rod is used as the cathodeThe anode electrode is active metal, then the metal preferentially loses electronsThe iron reacts with electrons to produce ferrous ionsThe cathode is made of aluminum, so the metal does not get hydrogen ions in the electrons
The anodic reaction leads to the loss of aluminum to trivalent aluminiumThe cathode react with hydrogen ions to change electrons into hydrogenIf water is to be produced by electrolysis of water, oxygen should be used as anode and the cathode material connected to the negative electrode of the power supply does not matter
