Chemistry · Electrochemistry

By accepting an electron, hydronium ions are converted into hydrogen atoms, and water is released.
H3O + e- → H +H2O

a) Hydrogen gas:
This option suggests that by accepting an electron, a hydronium ion is converted into hydrogen gas. This statement is not correct. A hydronium ion (H3O+) is formed when a water molecule (H2O) gains a proton (H+) through protonation. It does not involve the acceptance of an electron. Therefore, it does not produce hydrogen gas. 

b) Hydrogen atom:
This option states that by accepting an electron, a hydronium ion is converted into a hydrogen atom. This statement is not accurate. A hydronium ion is a positively charged ion (H3O+) that contains a proton (H+) bound to a water molecule (H2O). It does not convert into a neutral hydrogen atom by accepting an electron.

c) Water:
This option suggests that by accepting an electron, a hydronium ion is converted into water. This statement is not correct. Hydronium ions (H3O+) are already associated with water molecules (H2O) and are formed in aqueous solutions when hydrogen ions (H+) are protonated by water molecules. 

d) Both B and C:
This option claims that by accepting an electron, a hydronium ion is converted into both a hydrogen atom and water. However, as explained earlier, neither a hydrogen atom nor water is the correct product of a hydronium ion accepting an electron. Therefore, option (d) is also not correct.