What is the lab set up called when you bubble Hydro chloride, gas in acetone in order to make crystals

The lab setup you're referring to is commonly known as a "bubbling setup" or "gas-infusion setup." In this specific context, where hydrogen chloride gas is bubbled through acetone to form hydrochloric acid (HCl) in solution, which may lead to the formation of crystals (possibly acetone hydrochloride or similar compounds), it can also be described as a "gas washing bottle" system or "bubbler." The setup typically involves using a gas sparger or a glass tube to introduce the gas into the liquid, which promotes the dissolution of the gas into the solvent, allowing for subsequent crystallization of the desired product.