Question

A. What is an oxidizing agent?

An oxidizing agent is a reactant that causes another substance to be oxidized by taking electrons from that substance. The oxidizing agent is reduced in the process of oxidizing another substance.

An oxidizing agent is a reactant that causes another substance to be oxidized by losing electrons from that substance. The oxidizing agent is reduced in the process of oxidizing another substance.

An oxidizing agent is a reactant that causes another substance to be reduced by taking electrons from that substance. The oxidizing agent is oxidized in the process of reducing another substance.

An oxidizing agent is a reactant that causes another substance to be reduced by losing electrons from that substance. The oxidizing agent is oxidized in the process of reducing another substance.

B. What is a reducing agent?

A reducing agent is the product of the reaction being oxidized that causes the reduction of the other substance.

A reducing agent is the product of the reaction that causes another substance to be oxidized by taking electrons from that substance.

A reducing agent is the substance being oxidized that causes the reduction of the other substance.

A reducing agent is a reactant that causes another substance to be oxidized by taking electrons from that substance.

C. Which of the following statements is true about oxidation states?

The sum of the oxidation states in the molecule Cl₂ is −2.

The oxidation state of solid aluminum is +3.

In a compound such as water, hydrogen has an oxidation state of +1.

In their compounds, group II metals have an oxidation state of +1.

D. Consider the reaction below. Al(s) + Cu²⁺(aq) → Al³⁺(aq) + Cu(s) Choose the reaction that is balanced using the half-reaction method.

3 Al(s) + 3 Cu²⁺(aq) → 2 Al³⁺(aq) + 2 Cu(s)

3 Al(s) + 2 Cu²⁺(aq) → 2 Al³⁺(aq) + 3 Cu(s)

3 Al(s) + 2 Cu²⁺(aq) → 3 Al³⁺(aq) + 2 Cu(s)

2 Al(s) + 3 Cu²⁺(aq) → 2 Al³⁺(aq) + 3 Cu(s)

E. How can rust be prevented?

Check all that apply.

keeping the metal dry

keeping the metal wet

galvanizing the metal

connecting a sacrificial electrode to the metal

coating it with a less active metal

brief heating

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