What is the oxidation state of sulfur in H2SO4?

• +6

• +2

• +4

• 0

Identify the oxidation state of nitrogen in NH3.

• -3

• -1

• +3

• +1

In a redox reaction, what happens to the oxidation state of the reducing agent?

• The oxidation state of the reducing agent fluctuates.

• The oxidation state of the reducing agent remains the same.

• The oxidation state of the reducing agent decreases.

• The oxidation state of the reducing agent increases.

What is the oxidation state of chlorine in NaCl?

• +1

• -2

• 0

• -1

Define a redox reaction.

• A redox reaction is a process that only involves the formation of new compounds.

• A redox reaction is a reaction where only one species is oxidized without any reduction occurring.

• A redox reaction is a type of reaction that does not involve any electron transfer.

• A redox reaction is a chemical reaction involving the transfer of electrons, resulting in oxidation and reduction of species.

What is the role of an oxidizing agent in a redox reaction?

• The oxidizing agent donates electrons to another substance.

• The role of an oxidizing agent is to accept electrons and cause the oxidation of another substance.

• The oxidizing agent is reduced during the reaction.

• The oxidizing agent increases the oxidation state of itself.

Identify the oxidizing agent in the reaction: 2Mg + O2 → 2MgO.

• O2

• MgO

• Mg

• H2O

What is the change in oxidation state for iron in the reaction: Fe2O3 + 3C → 2Fe + 3CO?

• -1 for each Fe, total -2 for 2 Fe

• 0 for each Fe, total 0 for 2 Fe

• -2 for each Fe, total -4 for 2 Fe

• -3 for each Fe, total -6 for 2 Fe

How do you determine the oxidation state of an element in a compound?

• The oxidation state is always zero in compounds.

• Oxidation states can only be determined through experimental data.

• The oxidation state is the same as the element's atomic number.

• The oxidation state of an element in a compound is determined by applying oxidation state rules and ensuring the sum equals the compound's overall charge.

What is the oxidation state of carbon in CH4?

• +2

• -4

• +4

• 0