Question

What happens when silver nitrate combines with sodium nitrate?

Answer 1

Hint: A chemical reaction in which a more reactive element displaces a less reactive element from its aqueous salt solution is called displacement reaction. A salt metathesis reaction is also known as a double replacement reaction, exchange, or even a double decomposition reaction, but that term is only used when one or more of the reactants do not dissolve in the solvent.

Complete answer:
When silver nitrate solution is added to sodium chloride solution, a white silver chloride precipitate is formed, as well as a sodium nitrate solution.
 Because an ion exchange occurs in this reaction, it is a double displacement reaction.
The reaction is as follows:
 $ AgN{O_3}(aq) + NaCl(aq) \to AgCl(s) + NaN{O_3}(aq) $
Double displacement reactions are those in which two chemicals react by exchanging ions to produce two new molecules. Positive ions exchange negative ion partners in double replacement processes. Double displacement reactions occur often in ionic compounds dissolved in water. A double replacement reaction is represented as follows:
 $ AB + CD \to AD + CB $
The use of the double displacement reaction
- Indigestion caused by stomach acid
- Metals are extracted.
- Flame photometry.

Note:
Checking if the cations exchanged anions with each other is the simplest technique to identify a double displacement process. Another hint is to look for aqueous reactants and the production of a single solid product if the states of matter are mentioned (since the reaction typically generates a precipitate).