Yes, the reaction between KCl (potassium chloride) and HNO₃ (nitric acid) to form KNO₃ (potassium nitrate) and HCl (hydrochloric acid) is a single displacement reaction.

Here's why:

* Single Displacement Reaction: In a single displacement reaction, a more reactive element or ion displaces a less reactive one from a compound.

* Reaction Breakdown: In this case, the hydrogen ion (H⁺) from HNO₃ is more reactive than the potassium ion (K⁺) in KCl. The hydrogen ion displaces the potassium ion, forming KNO₃ and leaving behind HCl.

Here's the balanced chemical equation:

KCl + HNO₃ → KNO₃ + HCl

Key points:

* This reaction is also considered an acid-base reaction, as nitric acid (HNO₃) is a strong acid and potassium chloride (KCl) is a salt that can act as a base in this context.

* The reaction is reversible and can be shifted to the right (favoring product formation) by removing one of the products (e.g., by evaporation of HCl).