Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
Double displacement reactions usually occur in:
aqueous solution
gaseous state
all three states
solid state
aqueous solution
Double displacement reactions, also known as metathesis reactions, require the reacting ions to be mobile and free to exchange partners. This mobility is almost exclusively achieved in an aqueous (water-based) solution where ionic compounds dissociate into their constituent ions.
Double displacement reactions, also known as metathesis reactions, require the reacting ions to be mobile and free to exchange partners. This mobility is almost exclusively achieved in an aqueous (water-based) solution where ionic compounds dissociate into their constituent ions.
Think of it like a dance where partners swap: for the swap to happen, the dancers must first be free to move around the floor (the aqueous solution), rather than being locked in fixed positions (the solid state).
ABCD: A+BтИТ+C+DтИТтЖТA+DтИТ+C+BтИТ
ABaqтАЛ+CDaqтАЛтЖТADsтАЛ+CBaqтАЛ тАФ General representation of a precipitation reaction
In an aqueous solution, ionic salts dissociate into cations and anions, allowing them to collide and rearrange. The reaction typically proceeds if one of the products is a solid precipitate (s), a gas (g), or a molecular substance like water (l), which drives the reaction to completion by removing ions from the solution.
Ions must be in a mobile state to exchange partners.
The presence of a solvent (water) facilitates ion dissociation.
Commonly manifests as precipitation reactions.
Usually involves ionic compounds.
Used for salt preparation
Effective for precipitation of insoluble compounds
Not suitable for reactions between non-polar covalent compounds
Requires solvent recovery if the solvent is expensive
Water purification (removal of heavy metals)
Chemical analysis (identifying ions via precipitation)
The solid state is generally unreactive because the ions are trapped in a rigid lattice structure, preventing movement.
Option B (gaseous) and D (solid) lack the necessary medium for uniform ion mobility.
A is correct тАФ Double displacement reactions occur in aqueous solutions because water allows ionic compounds to dissociate into free, mobile ions that can swap partners.
Always remember that ionic reactions in chemistry are synonymous with aqueous mediums; solid-state reactions are typically restricted to solid-state chemistry and high-temperature metallurgy.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants