Identify weather the following process are oxidation or reduction reaction

A S2-=s+ze-
B N+3e-=N3-
C Fe2+=Fe3++e-

A Reduction

B Reduction
C Oxidation

To determine whether a process is an oxidation or reduction reaction, you need to identify the changes in oxidation states of the elements involved.

In the given processes:

A) S2- → S + 2e-
The sulfur ion, S2-, is being reduced because it gains two electrons. Thus, the process is a reduction reaction.

B) N → N3- + 3e-
The nitrogen atom is being oxidized because it loses three electrons, resulting in the formation of the nitride ion, N3-. Therefore, the process is an oxidation reaction.

C) Fe2+ → Fe3+ + e-
The iron ion, Fe2+, is being oxidized as it loses one electron, leading to the formation of the iron ion with a higher oxidation state, Fe3+. Hence, the process is an oxidation reaction.