EVERYDAY SCIENCE

Detailed explanation-1: -Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions.

Detailed explanation-2: -A double-displacement reaction occurs when the positive and negative ions of two ionic compounds switch places to form two entirely new compounds in an aqueous solution. These compounds can come in the form of precipitates, gasses, or molecular compounds.

Detailed explanation-3: -In a double replacement (a.k.a. double displacement or metathesis) reaction two compounds typically react with each other to produce two different compounds. This type of reaction is often an exchange of positive and negative components of the compounds. Two examples are precipitation and acid-base reactions.