Question

Explain why the double displacement reaction is also called the double decomposition reaction

Answer 1

Answer:

A double displacement reaction, also known as a double replacement reaction or metathesis reaction, is a type of reaction that occurs when the cations and anions switch between two reactants to form new products. ... After that, we switch the ions of the two reactants and write down the products.

Explanation:

Double displacement reactions take the form:

AB + CD → AD + CB

The reaction between silver nitrate and sodium chloride is a double displacement reaction. The silver trades its nitrite ion for the sodium's chloride ion, causing the sodium to pick up the nitrate anion.

AgNO3 + NaCl → AgCl + NaNO3

Here's another example:

BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2 NaCl(aq)