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what is mean by double displacement reaction ? |
Definition: A double displacement reaction is a type of reaction where part of of one reactant is replaced by part of another reactant. Double displacement reactions take the form: AB + CD ---> AD + CB Examples: The reactionAgNO3 + Na Cl ---> Ag Cl + NaNO3 is a double displacement reaction. The silver traded its nitrite ion for the sodium's chloride ion.In a double replacement reaction parts of two compounds switch places to form two new compounds. Two reactants yield two products. That is when silver nitrate (AgNO3) combines with sodium chloride (NaCl), two new compounds -- silver chloride (AgCl) and sodium nitrate (NaNO3) are formed because the sodium and silver switched places. The chemical equation for this double replacement reaction looks like: AgNO3 + NaCl ---> AgCl + NaNO3 Here are some other examples: KOH + H2SO4 ---> K2SO4 + H2O FeS + HCl ---> FeCl2 + H2S |
