Metal Reactivity Series Determines Displacement

Steps:

• Recall the reactivity series: metals higher displace those lower from compounds.
• Note copper ranks above silver in the series (Cu > Ag).
• Check if Ag can displace Cu²⁺ from CuSO₄(aq): no, since Ag is less reactive.
• Conclude no observable change occurs.

Why B is correct:

• Silver, being below copper in the reactivity series, cannot reduce Cu²⁺ to Cu metal, preventing any displacement reaction.

Why the others are wrong:

• A: No gas forms, as no redox reaction or decomposition occurs.
• C: Copper won't deposit, since silver lacks the reactivity to displace it.
• D: Silver remains intact and does not dissolve into the solution.

Final answer: B