when silver nitate reacts with hydrochloric acid' what type of reaction take place?

Answer 1

The first step in figuring out the type of reaction is recognizing what the reactants are from a chemical formula perspective. Silver Nitrate would be AgNO3, an ionic compound consisting of silver ions and nitrate ions. Hydrochloric acid is HCl, a very strong acid which exists as hydrogen ions (hydronium after mixing with water) and chloride ions.

In this case, you are dealing with two compounds that dissociate in water easily. This is a dead give-away that a double replacement (sometimes called a double displacement) reaction will occur.

The silver ions will be attracted to the chloride ions and will want to form the solid Silver chloride (AgCl) and precipitate out if solutions of the two were mixed. This precipitate can be easily predicted using any solubility rules, such as the one linked below in the Sources area.