Final answer:
The reaction RbCl(aq) + AgNO₃(aq) → RBNO₃(aq) + AgCl (s) is a double displacement reaction.
Step-by-step explanation:
The reaction RbCl(aq) + AgNO₃(aq) → RBNO₃(aq) + AgCl (s) is a double displacement reaction, also known as a metathesis reaction. In this type of reaction, the cations and anions in the reactants exchange partners to form new compounds. In this case, the Rb⁺ cation from RbCl combines with NO₃⁻ anion from AgNO₃ to form RBNO₃, and the Ag⁺ cation from AgNO₃ combines with the Cl⁻ anion from RbCl to form AgCl (which is a solid precipitate).