Higher Chemistry - Unit 1 - Oxidising and Reducing Agents

What is the species that lose electrons in a redox reaction?

• oxidizing agent
• reducing agent
• is reduced
• decreases in oxidation number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the species that gain electrons in a redox reaction?

• oxidizing agent
• reducing agent
• is oxidized
• increases in oxidation number

Tags

NGSS.HS-PS1-2

What is the oxidizing agent of this reaction?
3Mg + N₂−−−−> Mg₃N₂

• Mg
• N₂
• Mg₃N₂
• MgN

What is the reducing agent of this reaction?
3Mg + N₂−−−−> Mg₃N₂

• Mg
• N₂
• Mg₃N₂
• MgN

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the reducing agent of this reaction?
2Al_(s) + 6H⁺_(aq) −−−> 2Al³⁺ _(aq) + 3H_2(g)

• H⁺
• Al³⁺
• Al
• H₂

What is the oxidizing agent of this reaction?
2Al_(s) + 6H⁺_(aq) −−−> 2Al³⁺ _(aq) + 3H_2(g)

• H₂
• Al³⁺
• Al
• H⁺

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In the reaction
2Ca(s) + O₂(g) --> 2CaO(s), calcium is __________

• Reduced
• Synthesized
• Oxidized
• None of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which half-reaction correctly represents reduction reaction?

• Br^- + 2e^- −−−>Br₂
• Mn²⁺ + e^- −−−>Mn
• Ag⁺ + 2e^- −−−>Ag
• Cu²⁺ + 2e^- −−−>Cu

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which half-reaction correctly represents oxidation reaction?

• Mg −−−>Mg²⁺ + 3e^-
• Zn −−−>Zn²⁺ + 2e^- 
• Ag−−−>Ag⁺ + 2e^- 
• Li −−−>Li⁺ + 2e^-

Tags

NGSS.HS-PS1-2

Which species undergoes a gain of electrons?
Zn_(s) + Mg²⁺_(aq) −−−> Zn²⁺_(aq) + Mg _(s)

• Zn
• Mg²⁺
  Fe²⁺
• Zn²⁺
• Mg

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2