Double Replacement

A double displacement or replacement reaction is a type of reaction where part of one reactant is replaced by part of another reactant twice within the same formula. In order for a double replacement to occur a metal is replaced by a metal, and a nonmetal is replaced by a nonmetal.
A double displacement or replacement reaction is a type of reaction where part of one reactant is replaced by partof another reactant twice within the same formula. In order for a double replacement to occur a metal is replaced by a metal, and a nonmetal is replaced by a nonmetal.
Examples:
KOH + H2SO4 ---> K2SO4 + H2O 

FeS + HCl ---> FeCl2 + H2S 

NaCl + H2SO4 ---> Na2SO4 + HCl

Examples:
KOH + H2SO4 ---> K2SO4 + H2O 

FeS + HCl ---> FeCl2 + H2S 

NaCl + H2SO4 ---> Na2SO4 +HCl

+
+
=
=


AB + XY-----> AY + XB

+


AB + XY-----> AY + XB

+
Double Replacement Reactions
Double Replacement Reactions
+
+
+
+

An example of a double displacement reaction occurs between sodium chloride and silver nitrate to form sodium nitrate and silver chloride.

NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)

An example of a double displacement reactionoccurs between sodium chloride and silver nitrate to form sodium nitrate and silver chloride.

NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)

Real Life Examples:
Real Life Examples:
+
+

Example
Example
+
+

Nam vestibulum dolor quis libero.
Nam vestibulum dolor quis libero.
+
+
pellentesque:
pellentesque:
Pellentesque viverra. Ut sed odio. Class aptent taciti sociosqu ad litoratorquent per conubia nostra, per inceptos hymenaeos. Donec porttitor venenatis felis. Vivamus orci. Vestibulum rutrum tincidunt ante.
Integer non sem. Donec enim diam, sagittis at, mattis nec, ultricies vitae, diam. Donec euismod turpis et diam. Nunc non nulla. Duis nec tortor. Nulla facilisi. In ligula lectus, nonummy nec, pulvinar id, pulvinar ac, nisl. Pellentesque purus. Proin tristique tempusturpis. Ut id lectus. Nulla facilisi.
Mauris nonummy turpis id nisl. Fusce sit amet purus. Donec commodo, lorem id sodales congue, nulla lacus commodo mi, vel volutpat tortor augue id quam. Donec sit amet massa. Fusce at nulla. Aenean faucibus odio eget tortor. Pellentesque tellus. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Etiam nisl elit, venenatisconsequat, auctor non, sagittis sed, arcu. Sed arcu ipsum, fringilla ac, blandit a, lobortis vel, risus. Proin pulvinar malesuada metus. Pellentesque gravida fermentum nibh. Sed libero neque, feugiat eget, condimentum eu, tempor in, erat. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Pellentesque tristique adipiscing lacus.
Aliquam erat volutpat.Pellentesque vel augue. Suspendisse id quam a tellus laoreet viverra. Sed dignissim mattis ligula. Quisque vel neque vitae purus dapibus tristique. Nullam sed urna. Lorem ipsum dolor sit amet, consectetuer adipiscing elit. estibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Sed leo quam, pretium non, blandit eget, tincidunt a, augue. Donec ut massa.
Pellentesque viverra.Ut sed odio. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos hymenaeos. Donec porttitor venenatis felis. Vivamus orci. Vestibulum rutrum tincidunt ante.
Integer non sem. Donec enim diam, sagittis at, mattis nec, ultricies vitae, diam. Donec euismod turpis et diam. Nunc non nulla. Duis nec tortor. Nulla facilisi. In ligula lectus, nonummy nec, pulvinar id, pulvinarac, nisl. Pellentesque purus. Proin tristique tempus turpis. Ut id lectus. Nulla facilisi.
Mauris nonummy turpis id nisl. Fusce sit amet purus. Donec commodo, lorem id sodales congue, nulla lacus commodo mi, vel volutpat tortor augue id quam. Donec sit amet massa. Fusce at nulla. Aenean faucibus odio eget tortor. Pellentesque tellus. Cum sociis natoque penatibus et magnis dis parturient...