Exploring Redox Reactions

What is the oxidation number of sulfur in H2SO4?

• 0

• +2

• +4

• +6

Identify the oxidation number of nitrogen in NH3.

• -3

• +1

• -1

• +3

What type of redox reaction involves the transfer of electrons between two species?

• Synthesis reaction

• Decomposition reaction

• Oxidation-reduction reaction

• Combustion reaction

In a redox reaction, what is the substance that gets reduced called?

• Catalyst

• Oxidizing agent

• Electrolyte

• Reducing agent

Which of the following is a common oxidising agent: H2O2, NaCl, or CH4?

• C2H6

• H2O2

• H2O

• NaOH

What is the role of a reducing agent in a redox reaction?

• The reducing agent increases the oxidation state of another substance.

• The reducing agent is oxidized during the reaction.

• The role of a reducing agent is to donate electrons and cause the reduction of another substance.

• The reducing agent accepts electrons from another substance.

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

• 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.

• The oxidation state is always zero in compounds.

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

• Oxidation states can only be determined through experimental data.

What is the oxidation number of chlorine in NaClO?

• +1

• 0

• -1

• +3

Which of the following represents a redox reaction: 2H2 + O2 → 2H2O or NaCl → Na + Cl2?

• H2 + O2 → H2O

• 2Na + Cl2 → 2NaCl

• 2H2 + Cl2 → 2HCl

• 2H2 + O2 → 2H2O

What is the oxidation state of carbon in CO2?

• +2

• +4

• 0

• -4