Question

what is double displacement and displacement reaction

Answer 1

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double displacement reaction...

A chemical reaction between two compounds in which the first and second parts of one reactant are united, respectively, with the second and first parts of the other reactant.

displacement reaction...

a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions.

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Answer 2

A salt metathesis reaction, sometimes called a double replacement reaction, double displacement reaction, or double decomposition reaction, is a chemical process involving the exchange of bondsbetween two non-reacting chemical specieswhich results in the creation of products with similar or identical bonding affiliations.[1] This reaction is represented by the general scheme:

A-B + C-D → A-D + C-B

The bond between the reacting species can be either ionic or covalent. Classically, these reactions result in the precipitation of one product.