what type of reaction is AgF + CaCl2 --> AgCL + CaF2 ?

Double replacement.

Some might call it a precipitation reaction but D R is the better name.

The reaction you mentioned is a double displacement or precipitation reaction. In this type of reaction, the cations and anions of the two reactants switch places to form two new compounds.

The reaction AgF + CaCl2 --> AgCl + CaF2 is a double displacement reaction, also known as a precipitation reaction.

To determine the type of reaction, we need to understand the general types of chemical reactions.

In a double displacement reaction, the cations and anions of two different compounds switch places, resulting in the formation of two new compounds. In this case, the silver cation (Ag+) from AgF swaps with the calcium cation (Ca2+) from CaCl2, forming AgCl (silver chloride) and CaF2 (calcium fluoride).

Additionally, double displacement reactions often occur in aqueous solutions, where the compounds are dissolved in water. In this case, both AgF and CaCl2 are typically dissolved in water.

To summarize, the reaction AgF + CaCl2 --> AgCl + CaF2 is a double displacement reaction.