K.+Soo+Double+displacement+reaction.

= = = = =** Double Displacement Reaction. **= ==

In a double displacement reaction, the positive ions of two compounds replace each other to form two new compounds.

** Formula. **
AB + CD —› AD + CB

** Example of a double displacement reaction. **
Silver nitrate combines with sodium chloride to yield silver chloride and sodium nitrate.

** Changing the word equation into a formula equation… **
To change this word equation to a formula equation, you must first know the atomic symbols of all your reactants and products. Silver nitrate is AgNO3, sodium chloride is NaCl, silver chloride is AgCl and sodium nitrate is NaNO3.

Write a formula equation using the atomic symbols.

AgNO3 + NaCl —› AgCl + NaNO3

The products of this reaction are already given so you do not have to figure that out, but you know it is a double displacement reaction because the two similar ions,NO3 and Cl exchange places to produce two new compounds.

The compounds in this formula equation are already correctly written, so now check if it needs balancing. The number of atoms of each element on either side of the equation is already equal to each other, meaning the equation is already balanced. =] =]

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