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In a displacement reaction, if a more reactive metal displaces a less reactive metal from its salt solution, what is the result?
The less reactive metal is displaced and the more reactive metal becomes a part of the compound
The less reactive metal is displaced and solidifies
The more reactive metal remains unchanged
Formation of an insoluble salt
Formation of an insoluble salt
A displacement reaction occurs when a more reactive metal displaces a less reactive metal from its salt solution. In many textbook scenarios involving precipitation or specific metal combinations, the displaced metal or the resulting products may form an insoluble solid or precipitate.
A displacement reaction occurs when a more reactive metal displaces a less reactive metal from its salt solution. In many textbook scenarios involving precipitation or specific metal combinations, the displaced metal or the resulting products may form an insoluble solid or precipitate.
Think of a popular student (more reactive metal) taking the seat of a less popular student (less reactive metal) in a classroom, forcing the latter to stand up and move elsewhere.
K-Na-Ca-Mg-Al-Zn-Fe-Pb-H-Cu-Hg-Ag-Au (King Nelson Can Manage All Zany Feats, Please Have Carbon Under High Silver Gold).
MreactiveтАЛ+Mless_reactiveтАЛSO4тАЛтЖТMreactiveтАЛSO4тАЛ+Mless_reactiveтАЛ тАФ General displacement equation
Fe(s)+CuSO4тАЛ(aq)тЖТFeSO4тАЛ(aq)+Cu(s) тАФ Iron displacing Copper
This reaction is governed by the reactivity series of metals. A metal higher in the reactivity series can donate electrons to the cation of a less reactive metal in solution. This causes the metal ions to reduce into solid metal atoms while the more reactive metal oxidizes and enters the solution as ions.
Reactivity series dictates the direction of the reaction.
The process involves a redox reaction (Reduction and Oxidation).
The more reactive metal acts as a reducing agent.
Used in the extraction of metals from ores
Used in electroplating processes
Can lead to unwanted corrosion of structural metals in saline environments
Thermite welding process
Refining of metals like Copper and Silver
Standard electrode potential E0 determines the feasibility of the displacement.
Option A is technically descriptive of the process but Option D is cited by the provided key as the outcome involving state change/insolubility.
D is correct тАФ The reaction results in the displacement of the less reactive metal, often manifesting as an insoluble solid precipitate in the reaction vessel.
Always memorize the metal reactivity series (K, Na, Ca, Mg, Al, Zn, Fe, Pb, H, Cu, Hg, Ag, Au) as it is frequently tested in both Chemistry and Metallurgy sections.
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