Question

Rank these species by their ability to act as an oxidizing agent

Cu+

Br2

Cr2+

Na+

Answer 1

A reducing agent, or reductant, loses electrons and is oxidized in a chemical reaction. A reducing agent is typically in one of its lower possible oxidation states, and is known as the electron donor. A reducing agent is oxidized, because it loses electrons in the redox reaction. Examples of reducing agents include the earth metals, formic acid, and sulfite compounds.

Na⁺ > Cr₂⁺ >Cu⁺ > Br₂

Answer 2

ability to be an oxidizing agent means the ability to reduce itself

Na+ = -2.71

Cr2+= -0.91

Br2 = 1.09

Cu + = 0.34

The more negative, the more easy for the susbstance to reduce, therefore, to act as an oxidizing agent

Na+> Cr2+ > Cu+ > Br2

Answer 3

decreasing order of oxidising Nature

Na+ >Cu+ > Cr2+ >Br2      -----------100% sure