Double replacement reaction occurs when the cations and anions of two ionic compounds are exchanged. Select two compounds above and this calculator will predict whether or not the reaction will occur in water.This is simply based on the solubility chart of inorganic compounds.

Predicting and Balancing Double-Displacement Reactions.
Double replacement reaction occurs when the cations and anions of two ionic compounds are exchanged. When the chemical formula for each ionic compounds is written correctly, you can balance the equation like any other chemical equations by making sure the number of atoms for each element is the same on the left and the right. In double replacement, both reactants are compounds, each with a cation part and an anion part. The figure below clearly illustrates how this swap takes place. The prediction and balancing of these reactions isn't too much of a challenge for students at this stage, however, they now must consider whether or not each product will remain as part of the aqueous solution or will form a precipitate.

Typically, you will be given the left-hand (reactant side) and asked to provide the products to the reaction. Definition and examples of double replacement reactions. When the chemical formula for each ionic compounds is written correctly, you can balance the equation like any other chemical equations by making sure the number of atoms for each element is the same on the left and the right.
You need to be able to recognize a double discplacment reactions, complete the reaction (if you are just given the left side) and balance the reaction

The figure below clearly illustrates how this swap takes place. Predicting and balancing neutralization and precipitation reactions. Diatomic elements do not count; they are included in the single replacement category. Double-displacement reactions involve the switching of cations between two compounds. Double displacement reactions (also known as double replacement reactions or metathesis reactions) involve the swapping of ions between two ionic compounds or between one ionic compound and one acid.

A double replacement reaction will occur if a formation of a precipitate , gas or water takes place.