Redox Reactions Review

What do you call is the reaction that contains the element that is oxidized?

• reagent

• reactant

• oxidant

• reductant

It contains the element that is reduced.

• reagent

• reactant

• oxidant

• reductant

This occurs when an atom‘s oxidation state decreases during a reaction.

• oxidation

• reduction

• reduction-oxidation reaction

• none of the given choices

Tags

NGSS.HS-PS1-7

It is when an atom‘s oxidation state increases during a reaction.

• oxidation

• reduction

• reduction-oxidation reaction

• none of the given choices

Infer the correct REDOX of the given chemical equation

Tags

NGSS.HS-PS1-7

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

Tags

NGSS.HS-PS1-7

Given the balanced ionic equation representing a reaction: 2Al(s) + 3Cu²⁺(aq) → 2Al³⁺(aq) + 3Cu(s) Which half-reaction represents the reduction that occurs?

• Al → Al³⁺ + 3e^-

• Al³⁺ + 3e^- → Al

• Cu → Cu²⁺ + 2e^-

• Cu²⁺ + 2e^- → Cu

Another name for a "oxidation-reduction" reaction is

• chemical reaction

• neutralization reaction

• redox reaction

• nuclear reaction

Given the equation: 2 Al + 3 Cu²⁺ → 2 Al³⁺ + 3 Cu The reduction half-reaction is

• Al → Al³⁺ + 3e^–

• Al + 3e^– → Al³⁺

• Cu²⁺ + 2e^– → Cu

• Cu²⁺ → Cu + 2e^–

Tags

NGSS.HS-PS1-2