The reaction in which two compounds exchange their ions to form two new compounds is a

The reaction in which two compounds exchange their ions to form two new compounds is a double displacement reaction.

Here are the steps to identify a double displacement reaction:

1. Identify the reactants: In a double displacement reaction, there are usually two ionic compounds in the reactants.

2. Check for ion exchange: In a double displacement reaction, the positive ion of one compound combines with the negative ion of the other compound. Similarly, the negative ion of the first compound combines with the positive ion of the second compound.

3. Identify the products: The products of a double displacement reaction are two new compounds formed by the exchange of ions.

For example, in the reaction between sodium chloride (NaCl) and silver nitrate (AgNO3), the sodium (Na) ion combines with the nitrate (NO3) ion, and the silver (Ag) ion combines with the chloride (Cl) ion, forming sodium nitrate (NaNO3) and silver chloride (AgCl). This is a double displacement reaction.