The Following Experiments Were Carried Out and Observations Recorded

question 134

Multiple Choice

The following experiments were carried out and observations recorded.
Expt. #1: copper metal was added to an aqueous solution of silver nitrate Observation: The copper become coated with a substance.
Expt. #2: lead metal was added to an aqueous solution of copper(II) nitrate
Observation: The lead turned black and crumbled.
Expt. #3: zinc metal was added to an aqueous solution of lead(II) nitrate
Observation: The zinc appeared to fall apart.Which, if any, of the following properly ranks the metals from most active to least active.

• A) Most active Pb, next most active Zn, next most active Cu, least active Ag
• B) Most active Zn, next most active Ag, next most active Cu, least active Pb
• C) Most active Zn, next most active Cu, next most active Pb, least active Ag
• D) Most active Zn, next most active Pb, next most active Cu, least active Ag
• E) None of the above

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