Question

Given the following redox reaction:

3Ni2+(aq) + 2CO(s) $\rightarrow$ 2Co3+ (aq) +3Ni(s)

Identify the:

Oxidized substance

the reduced substance

the oxidizing agent

and the reducing agent

Answer 1

         3Ni²⁺(aq) + 2CO(s) $\rightarrow$ 2Co³⁺ (aq) +3Ni(s)

3Ni²⁺(aq) $\rightarrow$ 3Ni(s) reduction

2CO(s) $\rightarrow$ 2Co³⁺ (aq)   oxidation

cobalt oxidation number increases from 0 to +3 . so it is oxidation.

Oxidized substance cobalt. A substance which participate in oxidation reaction is called reducing agent.

the reducing agent is cobalt

   in this equation nickel oxidation number decreases from +2 to 0. So it is reduction .

the reduced substance.    Ni⁺² . The substance which participate in reduction reaction is called oxidicing agent.

the oxidizing agent Ni⁺²