Electrochemistry Test Review

Which metal does not corrode because of its lack of reactivity

• zinc
• magnesium
• nickel
• gold

The most common way of protecting iron objects from corrosion is to paint them so oxygen and moisture cannot touch the metal

• true
• false

When a piece of iron is dropped into a container of zinc chloride solution, what is the correct chemical reaction?

• Zn(s) + FeCl(aq) → Fe(s) + ZnCl₂(aq)
• Fe(s) + ZnCl₂(aq) → Zn(s) + FeCl₂(aq)
• No Reaction

Iron is less reactive than zinc

• true
• false

Given the activity series, when a piece of silver is dropped into a container of hydrochlorice acid, HCl, the reaction will take place and produce hydrogen gas, H₂

• true
• false

Which metal can replace iron in this reaction: <br />___ (s) + FeCl₂(aq) → Fe(s) + ___Cl₂(aq)

• cadium (Cd)
• lead (Pb)
• mercury (Hg)
• chromium (Cr)

Which of the following reactions cannot happen?

• Al(s) + Fe₂O₃(aq) → Al₂O₃(aq) + Fe(s)
• Fe(s) + CuSO₃(aq) → FeSO₃(aq) + Cu(s)
• Ag(s) + HCl(aq) → AgCl(aq) + H₂(g)
• Al(s) + HCl(aq) → AlCl₃(aq) + H₂(g)

Magnesium is less reactive than silver

• true
• false

Which of the following metals can replace Hydrogen bonded to another substance?

• magnesium (Mg)
• Zinc (Zn)
• Aluminum (Al)
• All of the above

Given the activity series, when a piece of copper is dropped into a container of water what is the correct chemical reaction?

• No Reaction
• Cu(s) + H₂O(l) → CuO(aq) + H₂(g)
• Cu(s) + H₂O(l) → CuH(aq) + O₂(g)