Which of the following displacement reactions is NOT possible ?

The correct answer is Cu(s) + PbCl2(aq) → CuCl2(aq) + Pb(s).Key Points

• A displacement reaction occurs when a more reactive element displaces a less reactive element from its compound.
• Cu(s) + PbCl2(aq) → CuCl2(aq) + Pb(s) is not possible because copper is less reactive than lead, so it cannot displace lead from its compound.
• In Pb(s) + CuCl2(aq) → PbCl2(aq) + Cu(s), lead is more reactive than copper, so it displaces copper from its compound.
• In Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s), iron is more reactive than copper, so it displaces copper from its compound.
• In Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s), zinc is more reactive than copper, so it displaces copper from its compound.

Additional Information

• Copper is a moderately reactive metal that is commonly used in electrical wiring, plumbing, and construction materials.
  • It is also an essential nutrient for plants and animals.
• Lead is a highly toxic metal that can cause serious health problems, including brain damage, kidney damage, and developmental delays.
  • It is commonly found in old paint, plumbing, and soil.
• Iron is the most significant metal, but it rusts easily, making it a mysterious material.
  • The majority is utilized in the production of steel, in manufacturing, and in civil engineering (reinforced concrete, girders, etc.).
• Rubber, medications, and metal goods are among the things that employ zinc.
  • Roughly 75% of the zinc that is used is used as metal, primarily in the form of rolled zinc, zinc-based die casting alloy, alloying metal for making bronze and brass, and a coating to prevent iron and steel from corroding.