Question

question 28 use the following reaction to answer the questions below. ca + n₂ -> ca₃n₂ which element was reduced select? which element was oxidized select? which element is the oxidizing agent? select which element is the reducing agent? select

Explanation:

Step1: Determine oxidation states

In elemental form, calcium ($Ca$) has an oxidation state of 0 and nitrogen ($N_2$) has an oxidation state of 0. In $Ca_3N_2$, calcium has an oxidation state of +2 and nitrogen has an oxidation state of - 3.

Step2: Identify reduction

Reduction is the gain of electrons and a decrease in oxidation state. Nitrogen goes from 0 to - 3, so nitrogen is reduced.

Step3: Identify oxidation

Oxidation is the loss of electrons and an increase in oxidation state. Calcium goes from 0 to +2, so calcium is oxidized.

Step4: Identify oxidizing agent

The oxidizing agent is the substance that causes oxidation and gets reduced itself. So nitrogen is the oxidizing agent.

Step5: Identify reducing agent

The reducing agent is the substance that causes reduction and gets oxidized itself. So calcium is the reducing agent.

Answer:

Which element was reduced: Nitrogen
Which element was oxidized: Calcium
Which element is the oxidizing agent: Nitrogen
Which element is the reducing agent: Calcium