JAMB - Chemistry (2002 - No. 13)
The product of the electrolysis of dilute sodium hydroxide using platinum electrodes are
Hydrogen and oxygen gases
Water and hydrogen gas
Water and sodium metal
Sodium metal and oxygen gas
Giải thích
The products of the electrolysis of dilute sodium hydroxide using platinum electrodes are hydrogen H\(_2\) at the cathode and oxygen (O\(_2\) at the anode.
This is because the reduction and oxidation of water occurs to produce hydrogen at the cathode and oxygen at the anode.