Below shows 3 displacement reactions involving metals and solutions of metal nitrates.
Cu+2AgNO3->Cu(NO3)2+2Ag
Pb+Cu(NO3)2->Pb(NO3)2+Cu
Zn+Pb(NO3)2->Zn(NO3)2+Pb
Use this information to find the order of reactivity of the 4 metals, with the most reactive first.
Answered above.
To determine the order of reactivity of the four metals (Cu, Pb, Zn, Ag), we can analyze the displacement reactions provided. The more reactive metal will displace a less reactive metal from its nitrate solution, resulting in the formation of a new nitrate and the deposition of the less reactive metal.
Let's examine the given reactions:
1) Cu + 2 AgNO3 -> Cu(NO3)2 + 2 Ag
Copper (Cu) displaces silver (Ag) from its nitrate solution, resulting in the formation of copper nitrate (Cu(NO3)2) and elemental silver (Ag).
2) Pb + Cu(NO3)2 -> Pb(NO3)2 + Cu
Lead (Pb) displaces copper (Cu) from its nitrate solution, forming lead nitrate (Pb(NO3)2) and copper metal (Cu).
3) Zn + Pb(NO3)2 -> Zn(NO3)2 + Pb
Zinc (Zn) displaces lead (Pb) from its nitrate solution, producing zinc nitrate (Zn(NO3)2) and metallic lead (Pb).
Based on these displacement reactions, we can determine the order of reactivity. The more reactive metal will be able to displace the less reactive metal from its nitrate solution.
From the provided reactions, we observe the following:
Copper (Cu) displaces silver (Ag) from its nitrate solution (reaction 1), indicating that copper is more reactive than silver.
Lead (Pb) displaces copper (Cu) from its nitrate solution (reaction 2), indicating that lead is more reactive than copper.
Zinc (Zn) displaces lead (Pb) from its nitrate solution (reaction 3), indicating that zinc is more reactive than lead.
Based on the reactions, we can conclude the order of reactivity of the four metals:
Most reactive: Zinc (Zn)
Second most reactive: Lead (Pb)
Third most reactive: Copper (Cu)
Least reactive: Silver (Ag)
Therefore, the order of reactivity, from most reactive to least reactive, is Zn > Pb > Cu > Ag.