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Kliff Kingsbury sanded and cleaned a square sheet of copper. He then carefully p

ID: 996516 • Letter: K

Question

Kliff Kingsbury sanded and cleaned a square sheet of copper. He then carefully placed one drop of a AgNO3 solution on the surface of the copper sheet. After 30 seconds, he wiped off the solution and saw a dark spot. Which of the following statements best explains what happened?

Cu2+(aq) turned into Cu(s) because copper is more active than silver

Ag+(aq) turned into Ag(s) because silver is more active than copper

Ag+(aq) turned into Ag(s) because copper is more active than silver

Cu2+(aq) turned into Cu(s) because silver is more active than copper

Cu2+(aq) turned into Cu(s) because copper is more active than silver

B.

Ag+(aq) turned into Ag(s) because silver is more active than copper

C.

Ag+(aq) turned into Ag(s) because copper is more active than silver

D.

Cu2+(aq) turned into Cu(s) because silver is more active than copper

Explanation / Answer

C. Ag+(aq) turned into Ag(s) because copper is more active than silver