Write the anode reaction for the electrolysis of the concentrated zinc chloride solution using zinc electrodes
To determine the anode reaction for the electrolysis of a concentrated zinc chloride (ZnCl2) solution using zinc electrodes, we need to consider the possible reactions occurring at the anode.
At the anode, oxidation takes place, where electrons are lost. In this case, the zinc electrode will be oxidized, leading to the formation of zinc ions. The chloride ions (Cl-) from the zinc chloride solution will not be oxidized at the anode since zinc is more easily oxidized than chloride.
The half-reaction for the oxidation of zinc can be written as follows:
Zn(s) -> Zn2+(aq) + 2 e-
This equation represents the conversion of solid zinc (Zn) into zinc ions (Zn2+) and the release of two electrons.
Hence, the anode reaction for the electrolysis of concentrated zinc chloride solution using zinc electrodes is:
Zn(s) -> Zn2+(aq) + 2 e-