Based on the following information, cl2(g) + 2 e- → 2 cl-(aq) e° = + 1.36 v mg2+(aq) + 2 e- → 2 mg(s) e° = -2.37 v which of the following chemical species is the strongest reducing agent?
a) cl2(g)
b) mg2+(aq)
c) cl-(aq)
d) mg(s)

D) Mg(s)

Explanation:

We are given:

The substance having highest positive potential will always get reduced and will undergo reduction reaction. Here, chlorine will undergo reduction reaction will get reduced.  Magnesium will undergo oxidation reaction and will get oxidized.

Reducing agents are the species which reduces others and oxidizes itself. Thus, Magnesium will be the strongest reducing agent.