Redox Reactions

Another name for a "oxidation-reduction" reaction is

• chemical reaction

• neutralization reaction

• redox reaction

• nuclear reaction

Given the reaction for the corrosion of aluminum: 4 Al + 3 O₂ → 2 Al₂O₃ Which half-reaction correctly represents the oxidation that occurs?

• Al + 3e–^ → Al³⁺

• Al → Al³⁺ + 3e^–

• O₂ + 4e^– → 2 O^2–

• O₂ → 2 O₂– + 4e^-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Half-reactions can be written to represent all

• double-replacement reactions

• neutralization reactions

• fission and fusion reactions

• oxidation and reduction reactions

Which half-reaction shows conservation of charge?

• Cu + e^– → Cu⁺

• Cu⁺ → Cu + e^–

• Cu²⁺ + 2e^– → Cu

• Cu²⁺ → Cu + 2e^–

Tags

NGSS.HS-PS1-2

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

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.

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

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.

Which of the following is an example of a redox reaction involving a metal and a non-metal?

• Zinc (Zn)

• Copper (Cu)

• Sulphur (S)

• Oxygen (O)

• None

• Sodium (Na)

• Chlorine (Cl)

• Sodium chloride (NaCl)

• None