Electrochemistry Warm Up

Consider the following reaction:
Zn_(s) + Cu⁺²_(aq) → Zn⁺²_(aq) + Cu_(s)
Identify the reactant that loses electrons

• Zn
• Cu⁺²

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Consider the following reaction:
Zn_(s) + Cu⁺²_(aq) → Zn⁺²_(aq) + Cu_(s)
Identify the reactant that gains electrons

• Zn
• Cu⁺²

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Consider the following reaction:
Zn_(s) + Cu⁺²_(aq) → Zn⁺²_(aq) + Cu_(s)
How many electrons are transferred when one Zn atom reacts with one Cu⁺² ion?

• 0 electrons
• 1 electron
• 2 electrons
• 4 electrons

Tags

NGSS.HS-PS1-2

 Consider the following reaction:
Zn_(s) + Cu⁺²_(aq) → Zn⁺²_(aq) + Cu_(s)

How many moles of electrons are transferred when one mole of Zn reacts with one mole of Cu⁺²? 

• no moles of electrons
• 1 mole of electrons
• 2 moles of electrons
• 4 moles of electrons

Consider the following reaction:
Zn_(s) + Cu⁺²_(aq) → Zn⁺²_(aq) + Cu_(s)

Which species is oxidized?

• Zn
• Cu⁺²

Consider the following reaction:
Zn_(s) + Cu⁺²_(aq) → Zn⁺²_(aq) + Cu_(s)

Which species is reduced?

• Zn
• Cu⁺²

What's the oxidation number of copper in Cu²⁺?

• 0
• +2

What's the oxidation number of copper in Cu(s)?

• 0
• +2

What's the oxidation number of nitrogen in NO₃^–_(aq) ?

• 0
• +3
• +5
• +6

What's the oxidation number of nitrogen in NO_(aq)?

• 0
• +2
• +3
• +4