What is the difference between displacement and double displacement reactions ? Write equations for these reactions.
In displacement reaction one element takes place of other element in a compound.
Chemical Equation:
CuSO4 (aq) + Zn (s) 
ZnSO4 + Cu
In double displacement reaction two compounds react by an exchange of ions to form two new compounds.
Chemical equation:
AgNO3 (aq) + NaCl (aq) 
AgCl (s)+ NaNO3 (aq)
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