An iron nail is placed in each of the following solutions: AgNO3, Mg(NO3)2, CuSO4, Pb(NO3)2...?

a) In which of the solutions, would you expect a coating of another metal on the iron nail?





(and if you could explain why please... I'm a student and I'm having a bit of trouble with this)


Thank you!!!!!An iron nail is placed in each of the following solutions: AgNO3, Mg(NO3)2, CuSO4, Pb(NO3)2...?
the first answer is correct.





iron is more reactive than copper, silver and lead.


thus, it will displace them from their solutions and copper / silver / lead will then adhere to the surface of the iron nail.





as magnesium is more reactive than iron, it will simply stay as a solution as iron cannot displace magnesium.





hope that helps :)An iron nail is placed in each of the following solutions: AgNO3, Mg(NO3)2, CuSO4, Pb(NO3)2...?
The solutions which contain a metal less reactive than iron.





In this case it is silver, copper, and lead (II) nitrate.





This is because the more reactive metal (iron) will displace the less reactive metal ions out of the solution (i.e. precipitate out).





Eg. Fe + Pb2+ -%26gt; Fe2+ + Pb
Fe + 2AgNO3 --%26gt; Fe(NO3)2 + 2Ag





Fe + Mg(NO3)2 -/-%26gt;





Fe + CuSO4 --%26gt; FeSO4 + Cu





Fe + Pb(NO3)2 --%26gt; Fe(NO3)2 + Fe





Fe is more reactive than Ag, Cu and Pb. But, Fe is less reactive than Mg.





Hope it helps





peace


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