Double_displacement_reaction Double_displacement_reaction

Double displacement reaction - Definition and Overview
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In a chemical double displacement reaction two compounds displace each other to form two new compounds. For example:

2 NaCl(aq) + CuSO4(aq) ⇒ Na2SO4(aq) + CuCl2(solid)
CaCl2(aq) + 2 AgNO3(aq) ⇒ Ca(NO3)2(aq) + 2 AgCl(solid)


A neutralization reaction is a specific type of double displacement reaction. Neutralization occurs when equal amounts of acid react with equal amounts of a base. A neutralization reaction creates a solution of salt and water. E.g.:

HCl(aqueus) + NaOH(aqueus) ⇒ NaCl(aqueus) + H2O(liquid)
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