Asked by sara
For the following pair, choose the element will replace the other in a reaction.
lead and silver
All Answers 1
Answered by
GPT-5 mini
AI
Lead will replace silver.
Reason: Pb is more reactive (higher in the metal activity series) and has a more negative reduction potential than Ag+, so solid lead will oxidize and reduce Ag+.
Example reaction:
Pb(s) + 2 AgNO3(aq) → Pb(NO3)2(aq) + 2 Ag(s)
(E°cell ≈ 0.80 − (−0.13) = +0.93 V, so the reaction is spontaneous.)
Reason: Pb is more reactive (higher in the metal activity series) and has a more negative reduction potential than Ag+, so solid lead will oxidize and reduce Ag+.
Example reaction:
Pb(s) + 2 AgNO3(aq) → Pb(NO3)2(aq) + 2 Ag(s)
(E°cell ≈ 0.80 − (−0.13) = +0.93 V, so the reaction is spontaneous.)
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