Review Quiz #08

In the reaction

Pb + 2Ag⁺ → Pb²⁺ + 2Ag

the Ag⁺ is

• oxidized, as the oxidation number changes from 0 to +1

• oxidized, as the oxidation number changes from +1 to 0

• reduced, as the oxidation number changes from +1 to 0

• reduced, as the oxidation number changes from +2 to 0

Which of the following metals would be most easily oxidized and become the anode in a voltaic cell?

• Al

• Fe

• Zn

• Cu

In the reaction

Mg + Cl₂ → MgCl₂

the correct half reaction for oxidation that occurs is:

• Mg + 2e^- → Mg²⁺

• Cl₂ + 2e^- → 2Cl^-

• Mg → Mg²⁺ + 2e^-

• Cl₂ → 2Cl^- + 2e^-

An oxide ion is oxidized to an oxygen atom by

• losing protons

• losing electrons

• gaining electrons

• gaining protons

A discharging battery is best described as a(n)

• voltaic cell that uses an electric current

• electrolytic cell that uses an electric current

• electrolytic cell that produces en electric current

• voltaic cell that produces an electric current