The reaction between ammonium chloride (NH₄Cl) and strontium hydroxide octahydrate (Sr(OH)₂·8H₂O) is a double displacement reaction that results in the formation of strontium chloride (SrCl₂) and ammonia (NH₃), along with water (H₂O).

Here is the balanced chemical equation:

2 NH₄Cl(aq) + Sr(OH)₂·8H₂O(aq) → SrCl₂(aq) + 2 NH₃(aq) + 10 H₂O(l)

Explanation:

* Ammonium chloride (NH₄Cl) is a salt that dissociates into ammonium ions (NH₄⁺) and chloride ions (Cl⁻) in solution.

* Strontium hydroxide octahydrate (Sr(OH)₂·8H₂O) is a strong base that dissociates into strontium ions (Sr²⁺) and hydroxide ions (OH⁻) in solution.

* The ammonium ions (NH₄⁺) react with the hydroxide ions (OH⁻) to form ammonia (NH₃) and water (H₂O).

* The chloride ions (Cl⁻) react with the strontium ions (Sr²⁺) to form strontium chloride (SrCl₂).

Important Note: This reaction is exothermic, meaning it releases heat. The reaction also produces ammonia gas, which has a pungent odor.