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1. Chemical Reactions and Equations
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What is the difference between displacement and double displacement reactions ? Write equations for these reactions.
Option A
Option B
Option C
Option D
Solution
In a displacement reaction, a more reactive element replaces a less reactive element from a compound.
$A + BX \longrightarrow AX + B$; where $A$ is more reactive than $B$
In a double displacement reaction, two atoms or a group of atoms switch places to form new compounds.
$AB + CD \longrightarrow AD + CB$
For example :
Displacement reaction :
$CuS{O_{4(aq)}}\, + \,Z{n_{(s)}}\, \to \,ZnS{O_{4(aq)}}\, + \,C{u_{(s)}}\,$
Double displacement reaction :
$N{a_2}S{O_{4(aq)}}\, + \,BaC{l_2}_{(aq)}\, \to \,BaS{O_{4(s)}}\, + \,2NaC{l_{(aq)}}\,$
Standard 10
Science
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